exclude IDE settings dir.
added goutte,selenium, phantoms for composer files.
added behat config for local testing.
added feature and step definitions for slide navigation tests.

WIP.
removed phpunit refs.
handled pressing keys on a page.
implmented slide navigation tests.
removed headless browser profile from local behat config.
removed phantom from composer deps.
fixed typo.
Merge pull request #5 from stopfstedt/slide-nav-tests

slide navigation test feature