Downgrade for IDEA version

This change allows the plugin to be installed in latest IntelliJ IDEA v12 (12.1.4) as the build number is 129.713 and PHPStorm is 129.757.

There should be no problem in installing this in the latest stable PHPStorm.

Thanks.
Merge pull request #104 from dlsniper/patch-1

Downgrade for IDEA version