Deploy to SinaSAE

Because the the deploy enviroment changed, so I add some gem to the gemfile, you can change the gemfile
```ruby
gem 'cloudfoundry-jquery-rails'
gem 'cloudfoundry-devise', :require => 'devise'
gem 'json'
gem 'thin'

# gem 'execjs'
# gem 'therubyracer'

# gem 'debugger', group: [:development, :test]
```
to 

```ruby
# gem 'cloudfoundry-jquery-rails'
# gem 'cloudfoundry-devise', :require => 'devise'
# gem 'json'
# gem 'thin'

gem 'execjs'
gem 'therubyracer'

gem 'debugger', group: [:development, :test]
```