Experimental build

@patcon I have tried repeatedly to get this working but any variation I attempt always fails if not at the forked repo but most certainly the pull request.

The following is perhaps the 6th attempt to get this going but could use some guidance.

https://travis-ci.org/sylus/wet-boew-drupal/builds/3623994

Obviously alot of cruft to remove from the script but major problems relies on getting the correct branch + sha for original + merge commit