upgrade Dockerfile to latest release
upgrade Dockerfile to Ubuntu 14.04 LTS and OpenJDK 7
Use lein-bower to download JavaScript and CSS assets

Moves bower dependencies from `bower.json` to `project.clj` and
adds instructions for installing and running bower to README.
Merge pull request #5 from bfritz/dockerfile

updated versions (ansel 0.3.0 , Ubuntu 14.04 LTS, OpenJDK 7) in Dockerfile
Merge pull request #6 from bfritz/lein-bower

Use lein-bower to download JavaScript and CSS assets