Added a tooltip for the save

Author: Dervisevic

examples/bootstrap-example.html

@@ -105,7 +105,7 @@
       <form class="navbar-form navbar-left" role="search">
         <div class="form-group">
 
-          <button class="btn btn-primary" ng-click="save();">Save to gist</button>
+          <button class="btn btn-primary" ng-click="save();" tooltip-trigger="mouseenter" tooltip-placement="right" tooltip='Share the schema/form code.'>Save to gist</button>
 
           <div class="input-group" ng-show="navbarMode === 'default' && !error"></div>
           <div class="input-group" ng-show="navbarMode === 'loaded' && !error">