ArcGIS Maki styles created

Initial creation of ArcGIS maki styles.  Just picture marker symbols at
this point
Merge remote-tracking branch 'upstream/gh-pages' into gh-pages
Update of ArcGIS styles to include 7 new maki icons

Update both Desktop and Server styles to include the new maki icons
added to the main repo by @samanpwbb
Remove task list formatting

Change it to be just a plain list
Merge pull request #45 from williamscraigm/gh-pages

ArcGIS styles of the maki icon set