[WIP] Backend Work

Using this as a way to track and show progress

Tasks:
- [x] Convert to Sinatra app
- [x] Post form values to create Tweets via AJAX
- [ ] Determine if there is a link within link field rather than the original checkbox method.
- [x] Validation for Twitter handle field - Make sure only one handle per line and @ is used before string
- [x] Preview generated Tweets
- [x] Twitter integration that automatically posts Tweets without having to copy & paste
- [x] Approve Tweets before they are sent to Twitter
- [ ] Animation for when Tweets are being posted (a sending panel is shown, but no animation yet)
- [ ] Automatically determine if the tweet has a link.
- [ ] Order Twitter handles by length on the backend in order to create the least amount of Tweets
- [ ] Allow a user to save their list of Twitter handles
- [x] Add Documentation