Adding xcuserdata/ to .gitignore
Updating JSONUtils References to LPMJSONUtils

Somehow missed these earlier.
Add Travis Config
Update Travis Config to Specify Specific Simulator
Updating AFNetworking Dependency to ~> 2.5.0
Merge pull request #3 from lonelyplanet/feature/update-siren-client

Update LPMJSONUtils References, LPMSirenClient Version, and Add Travis Config