Merge pull request #1 from so-make-it/master

Update
Updates to acceptance message

- Replaced trustee name with "number of trustees"
- Added link to webchat.freenode.net
- Prompted to set up go-cardless
- Linked to wiki set up page
- Link to twitter in signature
Added more explanation to setting up wiki page
Merge pull request #22 from EdBrereton/master

Changes to acceptance email