a new example
some changes to d3adaptor to allow not specifying any node list
edge lengths test
Merge branch 'master' of https://github.com/tgdwyer/WebCola

Conflicts:
	WebCola/examples/unix.html
Fix automatic downward directed graph constraint generation

Quick and dirty fix for #14.
new link length api
Merge branch 'master' of https://github.com/Muon/WebCola into Muon-master

Conflicts:
	WebCola/cola.v1.min.js
	WebCola/src/linklengths.ts
segregating src
new dist mostly working
initial jade setup
jade and less
apparently fixed path shenanigans
moving stuff to be ready for more building stuff
adding thumnbnail stuff
cropping screenshots
more work on thumbnails
rewiring qunit
cleanin up templates, splitting jade tasks
temporarily using custom grunt-screenshot-element
adding bower to travis
copy as part of build