move to Guzzle for HTTP handling
fix adding query parameters
update the README a bit more
finish refactoring to using Guzzle and fixing the unit tests
use getStatusCode in getBody in exception
update tests, refactor exception handling a bit
remove getBody, update README, fix verifyRequest if/else structure
100% code coverage
update README
add Travis CI file and update README to show build status icon
Merge remote-tracking branch 'origin/master' into develop
update CHANGES file