Update bot.js PUSH #9

Updates:

- Simplified if/else functions
- CLIENT.submit only /echos as mods will probably ban for "spam"
- yesorno changed to coinflip (I find this easier)
- Moved console.log to outside (it's still a note), Made console.log of length a note
- **Filters out its own messages now**
- **Commands now not case sensitive**
Merge pull request #14 from ImRandomguy/patch-13

Update bot.js PUSH #9