New modules

• Rescaffolded
• Ported https://github.com/fabioxgn/go-bot/tree/master/commands/catfacts.go
• Ported (and adapted) https://github.com/fabioxgn/go-bot/tree/master/commands/godoc.go
• Updated readme
• Minor tweaks

First release

Includes ports of some for-fun modules from djosephsen/slacker and help replacement (with slack attachments, feature merger pending in djosephsen/lazlo#1).