update vcr link
Merge pull request #231 from xta/update-readme-for-vcr

update vcr link
Fix status code to Integer

This causes fail, 'comparison of String with 200 failed'
Ruby2.0.0-rc1
Merge pull request #241 from sanemat/fix/status-code

Fix status code to Integer
Add Ruby2.0.0 build in Travis-ci, and allowed to fail
Merge pull request #242 from sanemat/feature/travis-2-0-0

Add Ruby2.0.0 build in Travis-ci, and allowed to fail