changing assert statement
Changes to support .properties file
Adding GAUGE_ROOT which can be specified to override installation path

Setting GAUGE_ROOT env variable will use the given path as installation
directory and all the lookup will be done inside it

Conflicts:
	common.go
Revert "Revert "adding test for get project root""

This reverts commit 77f97360f38b5eb6400122ea977be73431da6069.

Conflicts:
	common.go
Revert "Revert "Adding more tests""

This reverts commit f723d34fb1bc5ebe048be0704cc7984b2975ebe2.
Merge branch 'concepts'

Conflicts:
	common.go