Update API doc, Add language/country in user info
Merge branch 'master' of https://github.com/charliezhang/gf2
Merge branch 'master' of https://github.com/gf2/gf2
Fix build error
Define country/language codes
Merge pull request #21 from charliezhang/master

Update API doc, Add language/country in user info
Merge branch 'master' of github.com:gf2/gf2
Fix gitignore.