Added a basic set of async matchers

- Fixes #1447
- Fixes #1547

src/core/Spec.js

@@ -1,6 +1,7 @@
 getJasmineRequireObj().Spec = function(j$) {
   function Spec(attrs) {
     this.expectationFactory = attrs.expectationFactory;
+    this.asyncExpectationFactory = attrs.asyncExpectationFactory;
     this.resultCallback = attrs.resultCallback || function() {};
     this.id = attrs.id;
     this.description = attrs.description || '';
@@ -57,6 +58,10 @@ getJasmineRequireObj().Spec = function(j$) {
     return this.expectationFactory(actual, this);
   };
 
+  Spec.prototype.expectAsync = function(actual) {
+    return this.asyncExpectationFactory(actual, this);
+  };
+
   Spec.prototype.execute = function(onComplete, excluded) {
     var self = this;