examples/follow: Update Twitter handles.

https://code.google.com/p/phantomjs/issues/detail?id=1082
Update ChangeLog.

Also, includes changes from 1.8.x.

http://code.google.com/p/phantomjs/issues/detail?id=863
https://code.google.com/p/phantomjs/issues/detail?id=939
Merge pull request #1 from ariya/master

test