Support android-app URI scheme

[shishirskumar]

Currently the parser doesn't support referer uri's having android-app scheme like android-app://m/facebook.com etc. This is similar to #145.

[shishirskumar]

I tried pushing the fix but getting ERROR: Permission to snowplow-referer-parser/java-referer-parser.git denied to shishirskumar. I have already signed the CLA. Can someone grant me the permission?

EDIT: Permissions issue is solved. I forgot to fork the repository.