Merge pull request #174 from Blackshawk/master

Issue #66 - Create directory as specified by user input
Merge pull request #173 from twokul/promises-failures

Report watcher errors
Merge pull request #144 from gabrielgrant/broccoli-less-single

Fix LESS and Stylus support with broccoli-less-single and broccoli-stylus-single
Remove unused adapters/broccoli/builder.js file
Adds livereload changes to CHANGELOG

Related [PR](https://github.com/stefanpenner/ember-cli/pull/173)

thanks to @abuiles for the reminder
Merge pull request #178 from twokul/changelog

Adds livereload changes to CHANGELOG
README changes

+ cosmetic changes
+ adds contributing guide
Merge pull request #179 from twokul/readme

README changes
don't smash window.ENV or window.ENV.FEATURES
tmp fixup, lock to correct ember-cli version
Add CSS extension language support to CHANGELOG
adjust changelog for clarity
Merge pull request #176 from joliss/cleanup

Remove unused adapters/broccoli/builder.js file
remove grunt test, as it merely invokes npm test, but in a complicated way.
test a spread of recent node versions
tidy up grunt file
add test for blueprinting the .gitignore
[fixes #184] correct template index.html
tidy up Brocfile
upgrade broccoli to 0.5.0