Merge pull request #56 from admpub/master

补遗
Update CONTRIBUTING.md

add links for fork a repo to
Merge pull request #58 from nashtsai/patch-1

Update CONTRIBUTING.md
add gobuild as cases
Merge branch 'master' of github.com:lunny/xorm
bug fixed
bug fixed for statement.IdParam
Merge pull request #1 from lunny/master

更新到最新版