adding container option to tooltips

js/bootstrap-tooltip.js

@@ -126,7 +126,8 @@
         $tip
           .detach()
           .css({ top: 0, left: 0, display: 'block' })
-          .insertAfter(this.$element)
+
+        this.options.container && $tip.appendTo(this.options.container).length || $tip.insertAfter(this.$element)
 
         pos = this.getPosition()
 
@@ -279,6 +280,7 @@
   , title: ''
   , delay: 0
   , html: false
+  , container: ''
   }