Added documentation for HybridAuth module

System version 0.231
modules:
Blogs 0.034
Comments 0.003
Cron 0.004
HybridAuth 2.1.1-cs17
OAuth2 0.011
Static_pages 0.024
plugins:
Admin_default_theme 0.001
TinyMCE 3.5.8-cs4
Tiny fixes in comments

System version 0.231
modules:
Blogs 0.034
Comments 0.003
Cron 0.004
HybridAuth 2.1.1-cs17
OAuth2 0.011
Static_pages 0.024
plugins:
Admin_default_theme 0.001
TinyMCE 3.5.8-cs4
Tiny fixes

System version 0.232
modules:
Blogs 0.034
Comments 0.003
Cron 0.004
HybridAuth 2.1.1-cs17
OAuth2 0.011
Static_pages 0.024
plugins:
Admin_default_theme 0.001
TinyMCE 3.5.8-cs4