Update old .rvmrc and .rbenv-version to .ruby-version and .gemset-version
Merge branch 'master' of github.com:mariozaizar/planet_express
Fixing the rubygems warning about not using https.
Now the email will include SAVE_COLUMNS options all the time.

> To save the personalization values in the Engage database,
> you must create the fields in your database and use the SAVE_COLUMN element
> for that XML tag.
Adding more info about how to build and deploy to rubygems (since I forgot)