Revert "Removes demo Travis CI builds "
Revert "Removes demo Travis CI builds "

This reverts commit 9365cb42e84485f6d67618b3f29bbbb4e243681b.

matej/MBProgressHUD,jum/MBProgressHUD,jdg/MBProgressHUD,pmaccamp/MBProgressHUD,matej/MBProgressHUD,jdg/MBProgressHUD