Update sprockets-rails to version 3.0.0
Update sprockets-rails to version 3.0.0

Stackato-Apps/adopt-a-hydrant,friendlycode/adopt-a-hydrant,Stackato-Apps/adopt-a-hydrant,codeforamerica/adopt-a-hydrant,friendlycode/adopt-a-hydrant,friendlycode/adopt-a-hydrant,jasnow/adopt-a-hydrant,codeforamerica/adopt-a-hydrant,CostantinB/adopt-a-hydrant,codeforamerica/adopt-a-hydrant,CostantinB/adopt-a-hydrant,jasnow/adopt-a-hydrant,CostantinB/adopt-a-hydrant,jasnow/adopt-a-hydrant,Stackato-Apps/adopt-a-hydrant