Add react-error-overlay package (facebook#2111)

* ༼ つ ◕_◕ ༽つ stack-frame-overlay

* Fix linting

* Remove auto overlay

* Fix e2e

* Pull in the rest

* Appease flow

* Correct dep

* Remove old repo references

* Check flow on test

* Test overlay in e2e

* Add cross env

* Rename package

* Make sure it gets built post-install

* Update the README

* Remove extra builds now that there's a postinstall script

* Revert "Remove extra builds now that there's a postinstall script"

This reverts commit 8bf601d.

* Remove broken script

* Fix some dev ergo

config/webpack.config.dev.js

@@ -55,7 +55,7 @@ module.exports = {
     // We ship a few polyfills by default:
     require.resolve('./polyfills'),
     // Errors should be considered fatal in development
-    require.resolve('react-dev-utils/crashOverlay'),
+    require.resolve('react-error-overlay'),
     // Finally, this is your app's code:
     paths.appIndexJs,
     // We include the app code last so that if there is a runtime error during

package.json

@@ -52,6 +52,7 @@
     "postcss-loader": "1.3.3",
     "promise": "7.1.1",
     "react-dev-utils": "^0.5.2",
+    "react-error-overlay": "^0.0.0",
     "style-loader": "0.16.1",
     "url-loader": "0.5.8",
     "webpack": "2.4.1",