Support ruby 2.1.0
Merge pull request #7 from sue445/feature/support_ruby_2.1.0

Support ruby 2.1.0
bundle update
Regenerate rspec settings

bundle exec rspec --init
Auto require lib/
Add rspec3 style spec
:golf:
Remove --warnings option because many warnings in guard
Change format
Update document
Merge pull request #8 from sue445/feature/rspec3

Support rspec3
Update RSpec and bundle update
Merge pull request #9 from tddbc/rspec3.1

Update RSpec and bundle update