Updated gems
Added spring commands for preloading environment
Removed empty files
Remove comments
Added bin/rspec command
Updated Rails files to 4.2 version
Moved secret_key_base to config/secrets.yml
Added heroku_secrets gem for pushing variables from config/secrets.yml to heroku
Updated README
Refactored specs
Removed spring-commands-rspec
Updated simple_form
Updated rails version
Updated rspec syntax
Merge pull request #3 from zauzaj/update-rails-version

Update rails version