small tweak to gruntfile
add a whole bunch of mixins
add link styles
put layout content inside a container
small top nav
change order of type and mixin imports
small copy edit to tagline
add a helpers file for static layout helpers
new 'page' layout that inherits from the default layout.
remove attribution and zoom from background map
build out documentation page
add sidebar pattern
scss for doc page
add the map as a background on all pages
lots of scss work
Merge branch 'beta5' of github.com:Esri/esri-leaflet into beta5
Merge pull request #255 from paulcpederson/beta5

set up documentation page