Merge pull request #187 from proverma/master

fixing unit tests
Re-enabling --browser=reuse
Logs for debugging
Setting default values for capsbilities
Refactoring for capability
Refactoring for browser reuse
Cleanup
Cleanup
Cleanup
Adding missing return
Fixing capabilities for proxy and reuse
Setting browser to firefox for reuse
Removing unused variable
Fixing error message, setupBrowserReuse method
Changing error message for capabilities
Merge pull request #188 from pranavparikh/master

Fix for browse reuse compatibility