add DOI to citation
update link to PMG collaboration workflow
test
switch to monty
add B. Foster to contributors
Fix duplicate path detection.
Fix ordering in set check for fw_config. Also make code more streamlined.
Unittests for launchpad

Initial commit of unit tests for launchpad
Unittests for launchpad

Initial commit of unit tests for launchpad
Comment out WFLock.
Remove WFLock.
unit tests updated for firetasks
Merge
.travis.yml
Cleanup.
Merge branch 'master' of github.com:materialsproject/fireworks

Conflicts:
	fireworks/core/launchpad.py
Merge branch 'master' of github.com:materialsproject/fireworks into misc_bharat
Merge branch 'master' of github.com:materialsproject/fireworks
Merge branch 'master' of github.com:materialsproject/fireworks into misc_bharat
Merge branch 'master' of github.com:materialsvirtuallab/fireworks