update project graph
todos
crawl github instead of using API - much more complete project coverage
refresh project graph
Use Leiningen 2.
Use trampoline in procfile.
Merge pull request #6 from technomancy/master

Use Leiningen 2 and trampoline in procfile.
Bump to latest rev of Clojure and Compojure. Switch to tentacles.
Merge pull request #7 from technomancy/modernize

Bump to latest rev of Clojure and Compojure. Switch to tentacles.
readme update
disable ajax for now (the crude caching mechanism chokes on large projects)
revert back to using github API
exclude pom dependencies that use $ variables, for now
todo
fix date parsing
WIP: change up graph format - take group-id into account, track latest/stable versions
get rid of unused scrape code
only include latest & stable versions of projects in precalculated dependent counts (favors current use a bit more)
move some reusable fns to util
make use of new graph format