Fixed 2 bugs when using MySQL:
1. VARCHAR requires a length on dialect mysql, e.g. db.String(63)
2. duplicate foreign key name `fk_topic_id`, `fk_forum_id`
Removed unused dependencies
Added a note in the readme for pip1.5
I have somehow fucked that up..
Hopefully, next time everything works :P
Improved installation/upgrading step a bit
Hopefully it\'s better now..
Merge pull request #11 from shuaishuai/pr

Fixed 2 bugs when using MySQL