WanderWang 2c7409b9ee improve exception message when we can't find a file
Summary:
in ```fastfs.js ``` when ```getFile()``` got a exception it will print ``` Unable to find file with path: null ``` in terminal .

It's  confused
Closes https://github.com/facebook/react-native/pull/4737

Reviewed By: svcscm

Differential Revision: D2752888

Pulled By: androidtrunkagent

fb-gh-sync-id: a366da1eea27c691248dcb17019f4462a639ea70
2015-12-12 17:28:33 -08:00
..
2015-12-02 19:03:27 -08:00