Added a working unit test of commands.main().
Added a working unit test of commands.main().

charbeljc/pystache,harsh00008/pystache,arlenesr28/pystache,rismalrv/pystache,jrnold/pystache,arlenesr28/pystache,defunkt/pystache,nitish116/pystache,charbeljc/pystache,rismalrv/pystache,jrnold/pystache,nitish116/pystache,rismalrv/pystache,beni55/pystache,nitish116/pystache,harsh00008/pystache,beni55/pystache,arlenesr28/pystache,harsh00008/pystache