Make output consistent for each command when there is a problem with the command's parameters

[eppeters]

Issue #2066 was addressed by PR #2074, which determined that it would be best to default to displaying a help screen to the user when bower search is run with incorrect (no) parameters. For instance, if no package parameter is passed to bower info, it should default to showing the output of the bower help info command.

Currently the command just exits without a message if run without a package param. The situation is similar for the commands info, home, lookup, update, uninstall, and unregister.

bower register currently displays an error message with usage when run with no parameters, but this could instead use the help screen to be consistent and change according to the bower help register screen's updates.

[heinst]

Ill help out with this one...already got info done Ill do a few then create a PR

[eppeters]

Nice! Be sure to check out #2074 because it should now be very easy to make a command default to the help screen. You just need to throw the right error in the readOptions for the command. Ignore me if you already knew that :P

[leegee]

# cd to a directory with no `bower.json` present
$ bower install
bower                           ENOENT No bower.json present
$ bower update

lee@DESKTOP-LTN5CQN MINGW64 /d/src/thin-monitor2/test/e2e (protractor-cucumber)
$