Revert "Move examples to https://github.com/react-navigation/examples"

This reverts commit 36775007b0.

examples/NavigationPlayground/package.json

@@ -0,0 +1,40 @@
+{
+  "name": "NavigationPlayground",
+  "version": "0.1.0",
+  "private": true,
+  "main": "./node_modules/react-native-scripts/build/bin/crna-entry.js",
+  "scripts": {
+    "postinstall":
+      "rm -rf node_modules/react-navigation/{node_modules,examples}",
+    "start": "react-native-scripts start",
+    "eject": "react-native-scripts eject",
+    "android": "react-native-scripts android",
+    "ios": "react-native-scripts ios",
+    "test": "node node_modules/jest/bin/jest.js"
+  },
+  "dependencies": {
+    "expo": "^24.0.2",
+    "react": "16.0.0",
+    "react-native": "^0.51.0",
+    "react-navigation": "file:../.."
+  },
+  "devDependencies": {
+    "babel-jest": "^21.0.0",
+    "flow-bin": "^0.56.0",
+    "jest": "^21.0.1",
+    "jest-expo": "^24.0.0",
+    "react-native-scripts": "^1.5.0",
+    "react-test-renderer": "16.0.0"
+  },
+  "jest": {
+    "preset": "jest-expo",
+    "moduleFileExtensions": ["web.js", "js", "json", "jsx", "node"],
+    "modulePathIgnorePatterns": [
+      "/node_modules/.*/react-native/",
+      "/node_modules/.*/react/"
+    ],
+    "transformIgnorePatterns": [
+      "/node_modules/(?!react-native|react-navigation)/"
+    ]
+  }
+}