Merge pull request go-xorm#378 from gavv/master

Accumulate args when using Join() multiple times

join parameters support & many comments

resolved go-xorm#374

Merge pull request go-xorm#358 from denji/tokudb

Preventing the creation of duplicate index TokuDB

Merge branch 'master' of github.com:go-xorm/xorm

Merge pull request go-xorm#295 from aviau/patch-1

copyright: add owner

update readme

mark 0.4.1 version

update xorm 0.3.2 changelog