Implemented: Travis support.
Merge pull request #5 from php-vcr/f-travis

Implemented: Travis support.
Fixed: typo.
Fixed: Updated dependencies to fix build and adds travis build status image.
Fix: Be compatible with PHP 5.3.13.

Removes phpunit as dependency and lowers PHP requirement in composer.json to >=5.3.
Fix repository URL
Merge pull request #7 from kasperg/patch-2

Fix repository URL