Summary:
Fix the following problems resulting from running `npm run lint`:
```
Examples/Movies/SearchScreen.js
118:4 error 'fetch' is not defined no-undef
177:4 error 'fetch' is not defined no-undef
Examples/UIExplorer/MapViewExample.js
32:1 warning Missing semicolon semi
Examples/UIExplorer/NavigatorIOSColorsExample.js
48:26 warning ['lightContent'] is better written in dot notation dot-notation
Examples/UIExplorer/TabBarIOSExample.js
81:16 warning Trailing spaces not allowed no-trailing-spaces
Examples/UIExplorer/TextInputExample.js
390:7 warning Missing semicolon semi
✖ 6 problems
```
Closes https://github.com/facebook/react-native/pull/1254
Github Author: Eric Sauter <esauter@lgscout.com>
Test Plan: Imported from GitHub, without a `Test Plan:` line.
