Example fix, test script, and some refactoring

- The test script just does an eslint check. (Closes #121)
- Refactored JS code to pass the check.
- Fixed VideoPlayer example. (Closes #117)
  - Updated package.json to use local react-native-video in a simple manner.
  - Added shared scheme for target.
  - Updated poject settings.
  - Now using react-native 0.18.1.

package.json

@@ -36,9 +36,16 @@
     "url": "git@github.com:brentvatne/react-native-video.git"
   },
   "devDependencies": {
-    "jest-cli": "0.2.1"
+    "jest-cli": "0.2.1",
+    "eslint": "1.10.3",
+    "babel-eslint": "5.0.0-beta8",
+    "eslint-plugin-react": "3.16.1",
+    "eslint-config-airbnb": "4.0.0"
   },
   "dependencies": {
-    "keymirror": "^0.1.1"
+    "keymirror": "0.1.1"
+  },
+  "scripts": {
+    "test": "node_modules/.bin/eslint *.js"
   }
 }