Loader: Added missing resource for custom loader example

Fixes gh-372
Closes gh-373

Author: agcolom

entries/loader.xml

@@ -96,7 +96,7 @@ $.mobile.loading( "show", {
 			<button class="show-page-loading-msg" data-theme="b" data-textonly="true" data-textvisible="true" data-msgtext="Text only loader" data-icon="arrow-r" data-iconpos="right">Text only</button>
 			<button class="show-page-loading-msg" data-theme="b" data-textonly="false" data-textvisible="true" data-msgtext="Loading theme a" data-icon="arrow-r" data-iconpos="right">Theme a</button>
 			<button class="show-page-loading-msg" data-theme="a" data-textonly="false" data-textvisible="true" data-msgtext="Loading theme b" data-icon="arrow-r" data-iconpos="right">Theme b</button>
-			<button class="show-page-loading-msg" data-theme="b" data-textonly="true" data-textvisible="true" data-msgtext="Custom Loader" data-icon="arrow-r" data-html="<span class='ui-bar ui-overlay-a ui-corner-all'><img src='../_assets/images/jquery-logo.png' /><h2>is loading for you ...</h2></span>" data-iconpos="right">Custom HTML</button>
+			<button class="show-page-loading-msg" data-theme="b" data-textonly="true" data-textvisible="true" data-msgtext="Custom Loader" data-icon="arrow-r" data-html="<span class='ui-bar ui-overlay-a ui-corner-all'><img src='../resources/loader/jquery-logo.png' /><h2>is loading for you ...</h2></span>" data-iconpos="right">Custom HTML</button>
 			<button class="hide-page-loading-msg" data-icon="delete" data-iconpos="right">Hide</button>
 		</div>
 	</div>