Adjust rspec3(exclude some point)

# Adjust rspec3

- Remove old syntax
- Remove old configuration
- Update rspec dependancy version

## exclude some point
- I don't remove all old syntax yet, so I add fixme comment :cry:

see: http://myronmars.to/n/dev-blog/2013/11/rspec-2-99-and-3-0-betas-have-been-released