Configtastic

• Added configuration API, which lets you configure some settings on VCR (see the README).
• VCR no longer saves cassettes if they haven't changed at all (thanks @sirpengi)
• VCR now supports JSON as well as YAML (thanks @sirpengi).
• Added amazing new skeumorphic logo, thanks @hairarrow.

v0.1.0 - First minor version bump!

backwards incompatible release - delete your old cassette files:
This release adds the ability to access the cassette to make assertions on it, as well as a major code refactor thanks to @dlecocq. It also fixes a couple longstanding bugs with redirects and HTTPS. [#3 and #4]