Added support for link_names in message formatting.
Do not log every chat message

Currently every chat message that any user sends to any room that hubot is
listening in is logged.

This removes that log message.
Merge pull request #21 from centresource/feature/add-link-names-support

Added support for link_names in message formatting.
Merge pull request #29 from eric/chat-log-data-leak-fix

Security: Do not log every chat message
release 2.0.0
implemented events for attachements
Attachment docs added
style fixes according to @evansolomon's notes
Merge pull request #32 from balbeko/attachment_evented

Rich "Attachment" Notifications Implemented
Create a lookup table for channel names

author.room is a special property that is copied by the Response. To ensure
any long-held Response continues to send to the correct room, a lookup table
must be used instead of adding a field onto user.
Merge pull request #34 from eric/fix-author-room

Create a lookup table for channel names
release 2.0.1