Adding test case for Back command
Merge branch 'master' of https://github.com/tarungulati1988/VoiceBasedBrowser
Merge branch 'master' of https://github.com/tarungulati1988/VoiceBasedBrowser
Merge branch 'master' of https://github.com/tarungulati1988/VoiceBasedBrowser
Merge branch 'master' of https://github.com/tarungulati1988/VoiceBasedBrowser
Test case to check the back command functionality