Run Travis-CI script command in a subshell

Rather than changing directories twice, into the dummy-app and back to
the project root, run the script command in a subshell so the current
working directory is preserved
Merge branch 'run-travis-script-command-in-subshell' into development
Build using ruby-2.0 on Travis-CI
Merge branch 'build-ruby-2.0-on-travis' into development

Conflicts:
	.travis.yml
WIP