Added !sharecraft to the !help output
Changed share craft command from /sharecraft to !sharecraft for consistency.
Updated server help with global GET_CRAFT_COMMAND and SHARE_CRAFT_COMMAND constants.

That should work...
Handle new ! client-side chat command syntax
Merge pull request #310 from ialexryan/master

Changed the sharecraft command from / to ! and added it to the !help command output.