update todo list
Create custom.css
Merge pull request #2 from mlarcher/develop

extends getting started section
Merge branch 'master' into gh-pages
Update README.md

update website url
Update README.md
Update README.md
Merge branch 'develop'
minor changes
add CNAME file
Merge branch 'master' into gh-pages
enhance js navigation
Merge branch 'master' into gh-pages
change website url in readme
Merge branch 'master' into gh-pages
change website CNAME
Merge branch 'master' into gh-pages
make modernizr use in linear-gradient mixin optional
add crossmedia friendly placeholders handling + use them in helpers
make Modernizr optional in provided mixins