Added ember-template-compiler-brunch and emblem-ember-brunch

This adds 2 more plugins, that are alternatives to existing plugins.

ember-template-compiler-brunch is my rework of the original ember handlebars compiler. This one is much smaller, because it does not include dependencies in the project, but pulls them from npm. This makes it possible to update these dependencies without a new version of the plugin being created.

emblem-ember-brunch is the same as above, but for emblem.