add less.js v1.7.0
add responsive-nav v1.0.32
Merge pull request #422 from PeterDaveHello/less.js_1.7.0

add less.js v1.7.0
Merge pull request #423 from PeterDaveHello/responsive-nav_1.0.32

add responsive-nav v1.0.32
Added MixItUp v2.0.3
Merge pull request #424 from patrickkunka/master

Added MixItUp v2.0.3