Docs: update swipe event documentation to include extensibility and warning about iOS.
Docs: update swipe event documentation to include extensibility and warning about iOS.

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