Adding composer.json, updating README with license
Merge pull request #53 from pantheon-systems/composer

Adding composer.json, updating README with license
fix the call to terminus_user_site_list() to account for a JSON response; addresses issue #52
Merge pull request #55 from pantheon-systems/tunnel-error

fix the call to terminus_user_site_list() to account for a JSON response...
Merge branch 'master' of github.com:pantheon-systems/terminus into ascii
Adding pantheon hex code easter egg for @kellybell :)