(clean) added test cases for ranges
(clean) added test cases for ranges

See item #58

bitovi/node-semver,stevemao/node-semver,thenaughtychild/node-semver,hippich/bower-semver,npm/node-semver,you49net/Repos,jasonkuhrt/node-semver,megawac/node-semver,ekmartin/node-semver,stealjs/node-semver