adds host config to production
 defines default url options
includes url_helpers so client can report its own url
 adds white space
bundle updates, fixes client serializer
adds the host as explicitly as i can , pos
sets everything back how it was, just passes the host into the url for call
fixes interpolation
sets up url options in application controller, reverts client serializer
adds host params to all url helpers in serializers
 sets up host in the initialzier based on the environment
adds host ENV var for travis
 fixes travis config
updates readme
Merge pull request #72 from G5/config-host

Config host