feat(doc): re-bootstrap doc based on instantsearch-android

This commit still contains the old doc for reference: we'll need to
remove it eventually

docgen/.babelrc

@@ -0,0 +1,13 @@
+{
+  "presets": [
+    ["env", { "targets": { "browsers": ["last 2 versions", "ie >= 9"] } }],
+    "latest",
+    "stage-2"
+  ],
+  "env": {
+    "development": {
+      "plugins": [
+      ]
+    }
+  }
+}

docgen/.eslintrc.js

@@ -0,0 +1,12 @@
+var join = require('path').join;
+
+module.exports = {
+  "extends": join(__dirname, "../.eslintrc.js"),
+  "settings": {
+    "import/resolver": {
+      "webpack": {
+        "config": join(__dirname, "webpack.config.babel.js")
+      }
+    }
+  },
+};

docgen/.gitignore

@@ -0,0 +1 @@
+node_modules

docgen/.netlify

@@ -0,0 +1 @@
+{"site_id":"ccaa6cd8-3550-436b-bc9d-fd827f355282","path":"preview.zip"}