*fixed build folder variable error
*renamed to build_dir
updates
fixed
* fixed issue with running gulp-task
Dev updates
* moved custom scripts to js/scripts
* added gulp-watch and gulp-print
* task html_files, default
Merge branch 'feature/package-folders' into develop

Conflicts:
	package.json
Modified
* added gulp-changed
* fixed issue with gulp scripts
* updated other files