Merge branch 'release/1.3'
Merge pull request #6 from dreamfactorysoftware/develop

adding support for reverse proxies, f5s, etc.
Update headers code
Update Angular http service.  Return promises in absence of callbacks.  Update Readme
Update Readme
Update Readme
Merge branch 'release/1.4'
Update Readme
Merge branch 'hotfix/1.4.1' into develop