Update Gemfile so that I'm able to install things on a brand new system

Fixes GH-314
Merge pull request #315 from Helabs/fr-update-gemfile-for-GH-314

Update Gemfile so that I'm able to install things on a brand new system
Add how to test on CONTRIBUTING file
Remove extra rspec definition from gemfile

Closes GH-303
added sendgrid setup
Merge pull request #301 from Helabs/feature/full-setup-sendgrid

added sendgrid setup
Remove import _variables.scss from responsive.scss.
Remove import _variables.scss from general.scss.
Remove import _variables.scss from form.scss.
Add import _variables.scss to application.scss.
Update changelog.