Remove unused gulp-util dependencies from error.coffee
Add support for javascript files and livereload

Added js task that will lint and concat all application java script files.

Added support for livereload.  Integrated with express server via
connect-livereload, and updated the watch task to additionally watch for
changes to generated build scripts, and notify the livereload server
in such case (via gulp-livereload plugin).
Handle coffee cache issue when doing gulp watch

Need to clear cache before calling 'coffee' task repeatedly (from gulp watch).
This is due to caching:
  .pipe remember 'coffee-cache'
Gulp watch calls this multiple times in the same session and seems to compile
already compiled coffeescript files after the first time it's called.
gulp-remember remembers all files that have been passed through it; compiled .js
files must be getting added to the cache
Merge pull request #10 from tommut/livereload

Add support for js files and livereload