Fix Cache.js not found

It failed when I run grunt:

```
umpirsky@zenbook:~/Projects/popcorntime-smarttv$ grunt 
Running "jshint:files" (jshint) task
>> 20 files lint free.

Running "requirejs:dist" (requirejs) task
>> Error: ENOENT, no such file or directory
>> '/home/umpirsky/Projects/popcorntime-smarttv/src/app/others/Cache.js'
>> In module tree:
>>     AppInit
>>       App
>>         providers/Scrapers
>>           providers/Ysubs
Warning: RequireJS failed. Use --force to continue.

Aborted due to warnings.
```