Modify create_custom_audience_from_website method in order to support breaking change at Oct 1st, 2014.
Fixes syntax error of create_custom_audience_from_website method.
Remove description parameter of create_custom_audience_from_webstie method.
Remove useless codes.
Add method to create custom audience pixel for a facebook adaccount.
Merge master branch of original repository.
Merge pull request #51 from taenyon/update

Modify create_custom_audience_from_website method in order to support breaking change at Oct 1st, 2014.