Added a vanilla React Native example app.

For #1012. Includes storyshots and the use of addon-options

examples/ReactNativeVanilla/.babelrc

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+{
+  "presets": ["react-native"]
+}

examples/ReactNativeVanilla/.buckconfig

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+
+[android]
+  target = Google Inc.:Google APIs:23
+
+[maven_repositories]
+  central = https://repo1.maven.org/maven2

examples/ReactNativeVanilla/.flowconfig

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+[ignore]
+; We fork some components by platform
+.*/*[.]android.js
+
+; Ignore "BUCK" generated dirs
+<PROJECT_ROOT>/\.buckd/
+
+; Ignore unexpected extra "@providesModule"
+.*/node_modules/.*/node_modules/fbjs/.*
+
+; Ignore duplicate module providers
+; For RN Apps installed via npm, "Libraries" folder is inside
+; "node_modules/react-native" but in the source repo it is in the root
+.*/Libraries/react-native/React.js
+.*/Libraries/react-native/ReactNative.js
+
+[include]
+
+[libs]
+node_modules/react-native/Libraries/react-native/react-native-interface.js
+node_modules/react-native/flow
+flow/
+
+[options]
+emoji=true
+
+module.system=haste
+
+experimental.strict_type_args=true
+
+munge_underscores=true
+
+module.name_mapper='^[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\|pdf\)$' -> 'RelativeImageStub'
+
+suppress_type=$FlowIssue
+suppress_type=$FlowFixMe
+suppress_type=$FixMe
+
+suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe\\($\\|[^(]\\|(\\(>=0\\.\\(4[0-2]\\|[1-3][0-9]\\|[0-9]\\).[0-9]\\)? *\\(site=[a-z,_]*react_native[a-z,_]*\\)?)\\)
+suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(>=0\\.\\(4[0-2]\\|[1-3][0-9]\\|[0-9]\\).[0-9]\\)? *\\(site=[a-z,_]*react_native[a-z,_]*\\)?)\\)?:? #[0-9]+
+suppress_comment=\\(.\\|\n\\)*\\$FlowFixedInNextDeploy
+suppress_comment=\\(.\\|\n\\)*\\$FlowExpectedError
+
+unsafe.enable_getters_and_setters=true
+
+[version]
+^0.42.0

examples/ReactNativeVanilla/.gitattributes

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+*.pbxproj -text

examples/ReactNativeVanilla/.gitignore

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+# OSX
+#
+.DS_Store
+
+# Xcode
+#
+build/
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata
+*.xccheckout
+*.moved-aside
+DerivedData
+*.hmap
+*.ipa
+*.xcuserstate
+project.xcworkspace
+
+# Android/IntelliJ
+#
+build/
+.idea
+.gradle
+local.properties
+*.iml
+
+# node.js
+#
+node_modules/
+npm-debug.log
+yarn-error.log
+
+# BUCK
+buck-out/
+\.buckd/
+*.keystore
+
+# fastlane
+#
+# It is recommended to not store the screenshots in the git repo. Instead, use fastlane to re-generate the
+# screenshots whenever they are needed.
+# For more information about the recommended setup visit:
+# https://github.com/fastlane/fastlane/blob/master/fastlane/docs/Gitignore.md
+
+fastlane/report.xml
+fastlane/Preview.html
+fastlane/screenshots

examples/ReactNativeVanilla/.watchmanconfig

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+{}

examples/ReactNativeVanilla/__tests__/__snapshots__/storyshots.js.snap

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+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Storyshots Button with some emoji 1`] = `
+<View
+  style={
+    Object {
+      "alignItems": "center",
+      "backgroundColor": "#F5FCFF",
+      "flex": 1,
+      "justifyContent": "center",
+    }
+  }
+>
+  <View
+    accessibilityComponentType={undefined}
+    accessibilityLabel={undefined}
+    accessibilityTraits={undefined}
+    accessible={true}
+    hasTVPreferredFocus={undefined}
+    hitSlop={undefined}
+    isTVSelectable={true}
+    onLayout={undefined}
+    onResponderGrant={[Function]}
+    onResponderMove={[Function]}
+    onResponderRelease={[Function]}
+    onResponderTerminate={[Function]}
+    onResponderTerminationRequest={[Function]}
+    onStartShouldSetResponder={[Function]}
+    style={
+      Array [
+        Object {
+          "backgroundColor": "transparent",
+        },
+        undefined,
+      ]
+    }
+    testID={undefined}
+    tvParallaxProperties={undefined}
+  >
+    <Text
+      accessible={true}
+      allowFontScaling={true}
+      ellipsizeMode="tail"
+    >
+      😀 😎 👍 💯
+    </Text>
+  </View>
+</View>
+`;
+
+exports[`Storyshots Button with text 1`] = `
+<View
+  style={
+    Object {
+      "alignItems": "center",
+      "backgroundColor": "#F5FCFF",
+      "flex": 1,
+      "justifyContent": "center",
+    }
+  }
+>
+  <View
+    accessibilityComponentType={undefined}
+    accessibilityLabel={undefined}
+    accessibilityTraits={undefined}
+    accessible={true}
+    hasTVPreferredFocus={undefined}
+    hitSlop={undefined}
+    isTVSelectable={true}
+    onLayout={undefined}
+    onResponderGrant={[Function]}
+    onResponderMove={[Function]}
+    onResponderRelease={[Function]}
+    onResponderTerminate={[Function]}
+    onResponderTerminationRequest={[Function]}
+    onStartShouldSetResponder={[Function]}
+    style={
+      Array [
+        Object {
+          "backgroundColor": "transparent",
+        },
+        undefined,
+      ]
+    }
+    testID={undefined}
+    tvParallaxProperties={undefined}
+  >
+    <Text
+      accessible={true}
+      allowFontScaling={true}
+      ellipsizeMode="tail"
+    >
+      Hello Button
+    </Text>
+  </View>
+</View>
+`;
+
+exports[`Storyshots Welcome to Storybook 1`] = `
+<View
+  style={
+    Object {
+      "flex": 1,
+      "justifyContent": "center",
+      "padding": 24,
+    }
+  }
+>
+  <Text
+    accessible={true}
+    allowFontScaling={true}
+    ellipsizeMode="tail"
+    style={
+      Object {
+        "fontSize": 18,
+        "marginBottom": 18,
+      }
+    }
+  >
+    Welcome to React Native Storybook
+  </Text>
+  <Text
+    accessible={true}
+    allowFontScaling={true}
+    ellipsizeMode="tail"
+    style={
+      Object {
+        "fontSize": 12,
+        "lineHeight": 18,
+        "marginBottom": 10,
+      }
+    }
+  >
+    This is a UI Component development environment for your React Native app. Here you can display and interact with your UI components as stories. A story is a single state of one or more UI components. You can have as many stories as you want. In other words a story is like a visual test case.
+  </Text>
+  <Text
+    accessible={true}
+    allowFontScaling={true}
+    ellipsizeMode="tail"
+    style={
+      Object {
+        "fontSize": 12,
+        "lineHeight": 18,
+        "marginBottom": 10,
+      }
+    }
+  >
+    We have added some stories inside the "storybook/stories" directory for examples. Try editing the "storybook/stories/Welcome.js" file to edit this message.
+  </Text>
+</View>
+`;

examples/ReactNativeVanilla/__tests__/index.android.js

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+import 'react-native';
+import React from 'react';
+import Index from '../index.android.js';
+
+// Note: test renderer must be required after react-native.
+import renderer from 'react-test-renderer';
+
+it('renders correctly', () => {
+  const tree = renderer.create(
+    <Index />
+  );
+});

examples/ReactNativeVanilla/__tests__/index.ios.js

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+import 'react-native';
+import React from 'react';
+import Index from '../index.ios.js';
+
+// Note: test renderer must be required after react-native.
+import renderer from 'react-test-renderer';
+
+it('renders correctly', () => {
+  const tree = renderer.create(
+    <Index />
+  );
+});

examples/ReactNativeVanilla/__tests__/storyshots.js

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+import path from 'path';
+import initStoryshots, { snapshotWithOptions } from '@storybook/addon-storyshots';
+
+initStoryshots();

examples/ReactNativeVanilla/android/app/BUCK

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+# To learn about Buck see [Docs](https://buckbuild.com/).
+# To run your application with Buck:
+# - install Buck
+# - `npm start` - to start the packager
+# - `cd android`
+# - `keytool -genkey -v -keystore keystores/debug.keystore -storepass android -alias androiddebugkey -keypass android -dname "CN=Android Debug,O=Android,C=US"`
+# - `./gradlew :app:copyDownloadableDepsToLibs` - make all Gradle compile dependencies available to Buck
+# - `buck install -r android/app` - compile, install and run application
+#
+
+lib_deps = []
+
+for jarfile in glob(['libs/*.jar']):
+  name = 'jars__' + jarfile[jarfile.rindex('/') + 1: jarfile.rindex('.jar')]
+  lib_deps.append(':' + name)
+  prebuilt_jar(
+    name = name,
+    binary_jar = jarfile,
+  )
+
+for aarfile in glob(['libs/*.aar']):
+  name = 'aars__' + aarfile[aarfile.rindex('/') + 1: aarfile.rindex('.aar')]
+  lib_deps.append(':' + name)
+  android_prebuilt_aar(
+    name = name,
+    aar = aarfile,
+  )
+
+android_library(
+    name = "all-libs",
+    exported_deps = lib_deps,
+)
+
+android_library(
+    name = "app-code",
+    srcs = glob([
+        "src/main/java/**/*.java",
+    ]),
+    deps = [
+        ":all-libs",
+        ":build_config",
+        ":res",
+    ],
+)
+
+android_build_config(
+    name = "build_config",
+    package = "com.reactnativevanilla",
+)
+
+android_resource(
+    name = "res",
+    package = "com.reactnativevanilla",
+    res = "src/main/res",
+)
+
+android_binary(
+    name = "app",
+    keystore = "//android/keystores:debug",
+    manifest = "src/main/AndroidManifest.xml",
+    package_type = "debug",
+    deps = [
+        ":app-code",
+    ],
+)