Prepare user's permission.
Track "public/assets/"
Run "rake assets:clobber" and "rake assets:precompile"
Heroku is automatic using the "public/asset/*" determine from "public/asset/mainfest{md5}.yml or .json
Merge branch 'master' of https://github.com/SocioQuiz/socio_quiz into prepare_userpermission_model
Fecth the lasted update from organization's master.
add permission field
default at "general"
We shall use string "admin" for admin type.
user's permission "admin" can do anything at app's index page.
Merge pull request #110 from not001praween001/solve-cachingProblem-secondTime

Solve caching problem second time
show play buttons only for non quiz owners
Merge pull request #111 from yuchan/show-answer-only-to-owner

show play button only for non quiz owners
Merge pull request #107 from not001praween001/prepare_userpermission_model

Prepare user's permission.