make sure grunt knows to compile literate coffeescript too

This adds `.litcoffee` and `.coffee.md` extensions to the
search paths for CoffeeScript files.
Merge pull request #181 from cobyism/litcoffee-extensions

Make sure Grunt knows to compile Literate CoffeeScript too
Add jshint-stylish for some stylish jshinting

https://github.com/sindresorhus/jshint-stylish
Alphabetize image extensions in gruntfile
Add gifs to imagemin task
Switch grunt server to grunt serve, alias server, add deprecation message

Addresses https://github.com/yeoman/yeoman/issues/1183.
Merge pull request #186 from robwierzbowski/gifs

Add gifs to imagemin task
Merge pull request #187 from robwierzbowski/grammar

Switch grunt server to grunt serve
version bump
Indentation to pass the linter

Without this change, the default `grunt` task fails.
Use grunt-newer for jshint and copy tasks
Merge pull request #192 from tschaub/pass-linter

Indentation to pass the linter
Prevent replacing of optimized gifs by copy task
Merge pull request #195 from Danmer/gifs

Prevent replacing of optimized gifs by copy task
simplify logic block
grunt serve should serve compass images from tmp, not dist

fixes #189
testing-framework flag requires '=' for now

refs #120
Merge pull request #193 from tschaub/use-grunt-newer

Use grunt-newer
reload tests when test files are saved
reload configuration on grunt change