IE: Remove extra var statement
Merge pull request #20 from tangram-map/iwillig/remove-extra-var

IE: Remove extra var statement
fix oudated uniform reference
IW: Move demo JavaScript/CSS to its own module
IW: A little house keeping on the main demo module
Merge pull request #24 from tangram-map/iwillig/separate-html-and-js

IW: Move demo JavaScript/CSS to its own module
initial use of traceur to add support for ES6 features
converted a bunch of .bind(this) callbacks to use fat arrow function syntax
IW: Update modules to use the ES6 module syntax

Since we are now using Google Traceur to pre process our JavaScript we
can take advantage of the new ES6 module system. Traceur compiles the
imports to require statements and browserify takes care of the finally
step.

WIP