Updated style files to included latest renders and icons

Updated style files to included latest renders and icons including
positional updates
Merge pull request #154 from mapbox/staging

update default layout
fixed svg files for heart-12, entrance-24, rail-metro-18, rail-light-18, and rail-18.
Merge pull request #155 from mapbox/fix-source-files

fixes svg files for heart-12, entrance-24, rail-metro-18, rail-light-18,...
update default layout
Updating to shareship default
Fix bug on non-word input
updated footer
0.4.0
Update default layout.
Changed MapBox to Mapbox.
Merge pull request #159 from meghanhade/gh-pages

Changed MapBox to Mapbox.
adding scissors + re-rendering
chemist maki icon
add chemist icon to json and render
Merge pull request #161 from mapbox/chemist

Chemist maki icon
merge in chemist icon
Merge pull request #160 from mapbox/scissors

adding scissors + re-rendering
Merge pull request #151 from williamscraigm/gh-pages

Updated ArcGIS style files to included latest renders and icons
updating default.html