add the installation guide on ubuntu, including binary install and source install
use the dedicated user, git, to run gogs
format the doc
format the doc and add comments
bug fixed
Merge pull request #109 from laofo/master

Create the installation guide for gogs on ubuntu (src & binary)
Merge branch 'master' of github.com:gogits/gogs
doc improvements
Changed setting url to settings
Close to Closed
Merge pull request #111 from james-anderson/master

Changed 'setting' url to settings, and a small typo fix
fixed some broken forms that were introduced in james-anderson@521c5f0e10
Merge pull request #120 from james-anderson/master

fixed some broken forms in user settings
Merge branch 'dev' of github.com:gogits/gogs into dev