MultiLined Buttons

Adding multilined button support
MultiLined Buttons

Sometimes the buttons in alerts may need to have large title like "I
understood", "Confirm and Accept terms of conditions" etc.

With this revision essential changes are done to make CXAlertView
support larger button titles making it more usable unlike ios alert
view where titles are truncated.
Update ReadMe

Updated read me to make it more clear and intuitive
Merge pull request #7 from ramakrishnachunduri/master

Multilined Alerts