Support parsing Infer output

[rowillia]

http://fbinfer.com/ is a great static analyzer for finding bugs. We should support parsing it's output.

For example:

./Root/Hello.java:27: error: NULL_DEREFERENCE
  object a last assigned on line 25 could be null and is dereferenced at line 27

./Root/Hello.java:37: error: RESOURCE_LEAK
   resource acquired to stream by call to allocateResource() at line 31 is not released after line 37

See https://github.com/lyft/linty_fresh/blob/master/CONTRIBUTING.md for more information on how to get started.