Add local instance.
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.
Merge pull request #25 from niczy/master

Add python gf2.py deploy --instance=local to start the local server.
Add UserManager, store user info in local storage.