letting user know that terminate deletes their data
added pydoc on new method
Merge pull request #256 from shatterednirvana/warn-on-appscale-down

Warn users that 'appscale down' deletes their data
enabling users to point appscale deploy at the war directory of their app, to be consistent with appcfg
Merge pull request #258 from shatterednirvana/allow-users-to-use-war-dir

enabling users to point appscale deploy at the war directory of their app