react-native example app port (#223)

* add readme

* react-native example app

* update readme

* add ios-cli dep

* revert package.json change

* update readme

* update readme

* don't auto launch metro

* add react native scripts

* nohoist @react-native-community/**

* update readme

* undo wrong README change

* remove react-native root dep

* copyright headers

* semi-style

* add default gitignore

* finish linting

* remove test for now

* fix typescript errors

* fix linting

* update scripts

* update deps and version

* update readme

* remove accidental dep

* update readme

* bump deps

* update yarn.lock

* actually update yarn.lock

* fix yarn.lock conflicts by updating exampleReactNative deps

packages/exampleReactNative/ios/exampleReactNative.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "group:exampleReactNative.xcodeproj">
+   </FileRef>
+   <FileRef
+      location = "group:Pods/Pods.xcodeproj">
+   </FileRef>
+</Workspace>