Merge pull request #1 from aries0420/kangie

Update Gemfile
Merge pull request #2 from aries0420/kangie

Merge.
Assets compiled for Heroku
Temporarily remove application.yml from .gitignore
Comment out the requirement for teaspoon/console in spec.rake
Update README.md
Update .gitignore
delete .ruby-version
Add content views to .gitignore
Modify .gitignore
Modify .gitignore
Modify .gitignore
Modify .gitignore
Modify .gitignore
Modify .gitignore
Added more stripe events to handle users' activities
Merge branch 'master' of https://github.com/aries0420/codeable
Merge remote-tracking branch 'origin/kangie'
Merge pull request #3 from aries0420/kangie

Adding assignment resource to repo
Take out a one-liner that's not needed on index page