v1.2.0 Changelog

[Toddses]

This release finishes up the cli package integration.

• --version, --help are command line options now. What they do should be obvious.
• db:push and db:pull are no longer valid commands. database is now the main command, and push or pull are now arguments to the command. So for instance, wpkit database push production is now the valid command.
• Better error message when a mysql command fails on a remote environment. It was giving a simple ERROR message, so I expanded that to include some possible problems. Will need to look into getting the actual error from mysql instead of just giving some possible errors.