added carrierwave gem and created uploader.rb file
added carrierwave and fog, set up AWS - no testing done yet
can now upload user pictures to AWS - no scaling implemented yet
users can now upload images and these will be automatically resized while maintaining aspect ratio
removed code added to bus view and controller (they were used for testing purposes to make sure images displayed properly after scaling)
updated user creates account test to account for uploaded images - test passes
attempt to appease houndci
another attempt to appease the hound
added .env.example file
user.rb validations to newer syntax
Fix indentation
Merge pull request #21 from LaunchAcademy/JL_add_carrierwave

RFR - JL add carrierwave