Updates from Wed Feb 25

- [react-packager] Fix lint errors | Amjad Masad
- [react-packager] fix a typo s/pacakge/package | Chengyin Liu
- [react-packager] Fix jest tests | Amjad Masad
- [Image] Really improve the quality of mis-sized images w/trilinear filtering | James Ide

jestSupport/env.js

@@ -0,0 +1,5 @@
+'use strict';
+
+global.setImmediate = global.setImmediate || function(fn) {
+  return setTimeout(fn, 0);
+};