Change serviceMappings to arrays, allowing for multiple api context
roots to be used in one service.
Add doc.
Merge branch '2.0.0-alpha' of https://github.com/OpenNTF/SocialSDK into 2.0.0-alpha
Merge pull request #1510 from fmoloney/2.0.0-alpha

Changing the service mappings so that one service can use multiple APIs