Gulp Refresh Fix & LiveReload

- Updated gulp watch to include more files.
- Updated gulp js to minify JS.
- Added dev-dependency gulp-livereload to automatically refresh browser.

NOTE: It will be necessicary to install and enable the [LiveReload](http://feedback.livereload.com/knowledgebase/articles/86242-how-do-i-install-and-use-the-browser-extensions-) browser extension to enable the automatic refresh.