Updated grid docs, added footer example at the bottom. Fixes #2707
Updated grid docs, added footer example at the bottom. Fixes #2707

Thanks for the suggestion @agcolom!

startxfr/jquery-mobile,hinaloe/jqm-demo-ja,npmcomponent/cbou-jquery-mobile,startxfr/jquery-mobile,rwaldron/jquery-mobile,rwaldron/jquery-mobile,arschmitz/jquery-mobile,arschmitz/jquery-mobile,arschmitz/uglymongrel-jquery-mobile,startxfr/jquery-mobile,arschmitz/uglymongrel-jquery-mobile,npmcomponent/cbou-jquery-mobile,arschmitz/jquery-mobile,arschmitz/uglymongrel-jquery-mobile,hinaloe/jqm-demo-ja,hinaloe/jqm-demo-ja,npmcomponent/cbou-jquery-mobile