Alphabetical order.
Added Pocket service.
Resolved Travis build 263.

https://travis-ci.org/Lusitanian/PHPoAuthLib/builds/16861762
Facebook access token response can contain access token only
Add Xing support to Readme
Merge pull request #217 from hanneskaeufler/patch-1

Add Xing support to Readme
Merge pull request #213 from flavioheleno/master

Added missing Facebook user_friends scope
Merge pull request #210 from jvandesande/patch-2

Facebook access token response could contain access token only
Merge pull request #176 from TheFox/pocket

Pocket OAuth2 Service
Updated readme to reflect v0.3