Read port from app's Info.plist (key "CalabashPort"), else set to 37265.

Used Keith Scheiwiller's code: https://github.com/8BitAce/calabash-ios-server/blob/81247293d2b87129372380fc7fce0d5bbac8a26b/calabash/Classes/CalabashServer.m
Fetch server port with new LPInfoPlist class

An interface for interacting with the app InfoPlist
CalabashServer uses LPInfoPlist to fetch port
Version route reports the server port
Merge pull request #94 from isachs/develop

Read port from app's Info.plist (key "CalabashPort"), else set to 37265.