[ReactNative] Add option to file watcher to ignore node_modules

package.json

@@ -59,7 +59,7 @@
     "react-timer-mixin": "^0.13.1",
     "react-tools": "0.13.2",
     "rebound": "^0.0.12",
-    "sane": "^1.1.2",
+    "sane": "git://github.com/tadeuzagallo/sane.git#c2c8672928",
     "source-map": "0.1.31",
     "stacktrace-parser": "git://github.com/frantic/stacktrace-parser.git#493c5e5638",
     "uglify-js": "~2.4.16",

packager/react-packager/src/FileWatcher/index.js

@@ -67,6 +67,7 @@ function createWatcher(rootConfig) {
     var watcher = new Watcher(rootConfig.dir, {
       glob: rootConfig.globs,
       dot: false,
+      ignore: 'node_modules',
     });
 
     return new Promise(function(resolve, reject) {