Got Qunit tests running through RSpec and fixed a bunch of bugs... 33 fails from the original suite to go

lib/handlebars/runtime.js

@@ -96,11 +96,13 @@ Handlebars.Runtime.prototype = {
     for(var i=0, l=statements.length; i<l; i++) {
       this.accept(statements[i]);
     }
+
+    return this.buffer;
   },
 
   mustache: function(mustache) {
     var idObj  = this.accept(mustache.id);
-    var params = this.evaluateParams(mustache.params);
+    var params = mustache.params;
 
     for(var i=0, l=params.length; i<l; i++) {
       params[i] = this.accept(params[i]).data;
@@ -137,6 +139,8 @@ Handlebars.Runtime.prototype = {
     this.buffer += content.string;
   },
 
+  comment: function() {},
+
   evaluateParams: function(params) {
     for(var i=0, l=params.length; i<l; i++) {
       params[i] = this.accept(params[i]).data;