Just removed an unused variable
dev:console improvement / fix for php 5.4

* Show a message if Magento installation failed
* realpath on a phar:// URL fails on php 5.4 (Ubuntu 12.10) - so just removed the realpath call and it works
Merge remote-tracking branch 'origin/fixes-dev-console' into develop
[TASK] Create phar with fixes for dev-console and updated changes.txt.