adds appns to easily add a custom namespace in xml
adds appns to easily add a custom namespace in xml

MaTriXy/idea-live-templates,SWQJueLian/idea-live-templates,GaryLaurenceau/idea-live-templates,baitouwei/idea-live-templates,tianzhidao28/idea-live-templates,myroid/idea-live-templates,keyboardsurfer/idea-live-templates,TonyTangAndroid/idea-live-templates