add empty default yeoman webapp
implement best-case workflow for finding polling location

* ask user for their address/current location
* find their precinct/polling location
* show map of precinct with walking directions to polling location
clean up source

* standardize on 4-space tabbing
* remove underscore dependency
* fix jshint issues
add dist to source tree, update favicon and title
remove 'var' from GeoJSON (was breaking requirejs)

- this involved modifying GeoJSON, which is a bower component.
Merge pull request #2 from carpeliam/master

basic polling location finder functionality