Merge pull request #1 from Gargron/master

Composer rename, and test stubs
Update composer.json
Update README.md
remove third parameter of http_build_query and replace manually
Merge pull request #4 from willwashburn/remove-54-dependency

Remove dependency on PHP 5.4
Merge remote-tracking branch 'upstream/master'

Conflicts:
	src/KISSmetrics/Client.php