Merge branch '3.0.0-wip' of github.com:twitter/bootstrap into 3.0.0-wip

dist/js/bootstrap.js

@@ -1,3 +1,5 @@
+if (!jQuery) throw new Error("Bootstrap requires jQuery")
+
 /* ========================================================================
  * Bootstrap: transition.js v3.0.0
  * http://twbs.github.com/bootstrap/javascript.html#transitions
@@ -547,7 +549,7 @@
 
     var dimension = this.dimension()
     this.reset(this.$element[dimension]())
-    this.transition('removeClass', 'shown.bs.hidden')
+    this.transition('removeClass', 'hidden.bs.collapse')
     this.$element[dimension](0)
   }
 
@@ -1573,7 +1575,7 @@
 
         return ($href
           && $href.length
-          && [[ $href.position().top + (!$.isWindow(self.$scrollElement.get(0)) && self.$scrollElement.scrollTop()), href ]]) || null
+          && [[ $href.offset().top + (!$.isWindow(self.$scrollElement.get(0)) && self.$scrollElement.scrollTop()), href ]]) || null
       })
       .sort(function (a, b) { return a[0] - b[0] })
       .each(function () {