Build files into a versioned build directory
Build spine.min.css using the built and versioned spine.css
Build spine.min.css in the versioned build
Introduce pkg.build_version, use grunt templating for version output

This removes the declared version var at the top of gruntfile.js and uses package.json to pull build version information when creating a build directory.

By having a build_version of something like 0.5, we're able to maintain smaller versions of 0.5.x to indicate revision while not causing a full URL change.
Update the pkg.version to 0.5.0
Merge branch 'master' into grunt-build

Merges dot:true update from previous PR
Conflicts:
	Gruntfile.js
Cleanup mixed tabs/spaces

Tidy. :)
Merge pull request #21 from washingtonstateuniversity/grunt-build

[PR] Files built during build process should have a destination of build/x.x/