add xing provider
Merge pull request #419 from rweng/xing-provider

add xing provider
Ability to authorize with oauth providers for multi-domain sites
Ensure @current_user is set for after_logout!
Updated tasks.rake to remove obsolete actions. Warning left intact.
Forgot to remove unnecessary fileutils require
Adds support for storing IP address on login
Adds IP address logging spec to rails3_mongoid
Modifies README.rdoc to reflect IP address logging modification
change twitter endpoint url to v1.1
Update user info endpoint along with API 1.1
Merge pull request #422 from beorc/master

Ability to authorize with oauth providers for multi-domain sites
Merge pull request #427 from jrozner/master

Make sure @current_user isn't nil for after_logout!
Merge pull request #430 from dustMason/master

tasks.rake update
Merge pull request #432 from impact11/master

IP address logging on sign-in
Merge pull request #434 from toyoshi/change_twitter_api_endpoint_for_v1_1

change Twitter API endpoint url to v1.1
Merge pull request #435 from paperboy-sqale/twitter-api-11

Update user info endpoint along with API 1.1
Fixing potential attack vector and instability in External Submodule

Fixes #407
Syntax
Backwards compatibility method