Started implementing webdriver tests for node-webkit.

Added failing test case.

Depend on chromedriver and make tests exit properly.

Use a platform specific build for tests.

More test fixing.

Move whole directory rather than one file.

Try to run a display.

Already set display.

Write config files where they should be, and run mongo to test properly.

Need to write the right file.

Need execute perms.

Need to make the directory.

Use right port.

Always start `Xvfb` and do it manually.

Try longer timeout.

Try different port.

Change timeouts.

Use updated slamengine and increase timeout again.

Give tests 30sec max timeout.

Fixes #105.
Merge branch 'master' of github.com:slamdata/slamdata into ready/105

Conflicts:
	.travis.yml
Merge pull request #115 from joneshf/ready/105

Ready/105