Updates gulp-notify to work with yosemite
Adds hero and front hero background color declarations

Only setting this in the variables file means, if the program site
doesn’t explicitly set an override, it relies on the primary color that
was set on the first pass, in this case our UP Global teal, setting it
here will grab the latest version of $primary-color and set it
correctly. Obviously.
Pulls in changes to up-style
Merge branch 'master' of github.com:StartupWeekend/program-site-base