Moved volo from script loader to build tools and browser package managers

From volo's github README:

> At its heart, volo is a generic command runner

and from what I got when I was [introduced to it by jrburke's blog](http://tagneto.blogspot.ca/2012/07/on-client-components-for-web-apps.html), there's a big emphasis on how it does browser package management

I'm also curious where volo has a script loader.

[[Commit that moved volo out of build tools]](https://github.com/codylindley/frontend-tools/commit/7896fdb355c119d1a5d1e7f93ae241f041fe2914)