Added initial readme

[git-p4: depot-paths = "//xFace-Apollo/branches/test_opensource/": change = 16103]
Added GPL copying file

[git-p4: depot-paths = "//xFace-Apollo/branches/test_opensource/": change = 16104]
Add NOTICE file

[git-p4: depot-paths = "//xFace-Apollo/branches/test_opensource/": change = 16105]
Merge branch 'master' of github.com:polyvi/openxface