Update jquerymobile/jquerymobile.d.ts

added missing methods in JQueryMobile interface:
showPageLoadingMsg(); 
hidePageLoadingMsg();

jquerymobile/jquerymobile.d.ts

@@ -288,6 +288,8 @@ interface JQueryMobile extends JQueryMobileOptions {
     options: JQueryMobileOptions;
 
     transitionFallbacks;
+    showPageLoadingMsg();
+    hidePageLoadingMsg();
     loader;
     loading;
     loadPage;
@@ -379,4 +381,4 @@ interface JQuery {
 
 interface JQueryStatic {
     mobile: JQueryMobile;
-}
+}