update npm postinstall for React Native app

.travis.yml

@@ -12,7 +12,7 @@ install:
       - sudo pip install --upgrade cython==0.25.2 pip setuptools
       - git clone https://github.com/akinwale/buildozer.git
       - cd app
-      - npm install --silent --save react@16.0.0 react-native
+      - npm install --silent
       - cd ..
       - cd buildozer
       - sudo python setup.py install

app/package.json

@@ -4,7 +4,7 @@
     "private": "true",
     "scripts": {
         "start": "node node_modules/react-native/local-cli/cli.js start",
-        "postinstall": "rm ./node_modules/react-native/local-cli/core/__fixtures__/files/package.json"
+        "postinstall": "cp ./patch/ReactNativeRenderer-dev.js.patch ./node_modules/react-native/Libraries/Renderer/ReactNativeRenderer-dev.js; rm ./node_modules/react-native/local-cli/core/__fixtures__/files/package.json"
     },
     "dependencies": {
         "lbry-redux": "lbryio/lbry-redux#common-components-refactor",