Merge pull request #9 from zhudhjen/master

Page redirection finished
revise the messy code in index.php (views)
rewrite the ranking function in vote_model and the code now looks more
elegance~
enabling voice playing
enabling gitigore and ignoring the binary files
Merge remote-tracking branch 'armour/master' into develop
Merge branch 'develop'
fixing commits
Merge branch 'develop'