refactoring and tests
badge for future versions [ci skip]
Merge pull request #29 from asiniy/badge

badge for future versions [ci skip]
Merge pull request #27 from asiniy/url_validator_test

test + refactoring
Add CodeClimate badge
Minitest error fixed
Merge pull request #33 from asiniy/minitest_updating

Deal with minitest for successful travis testing