include system using grunt-bake

Issue #24

Demo: http://numbereleven.github.io/Effeckt.css/

Gruntfile:
the bake task builds an index.html using the includes/index.html which has several <!--(bake PATH/TO/PART)--> to include the modules
it also generates single demo pages in demos/ by baking the include/demos/*.html documents

added the bake task to watch -> bakes automatically on changes in the includes/ folder

in order to add new modules you would have to
1. add the module's html to includes/files/
2. add <!--(bake files/THE_MODULE)--> to includes/index.html
3. add the module's css / js to includes/index.html

i think the following point can be automated, i'll keep working on this if you guys think its worth it
4. copy the includes/index.html to includes/demos/, rename it to match your module's name and remove all other modules from it
5. run grunt includes