Merge branch 'logankd-master'

- Support call count of 0 with toHaveBeenCalledTimes matcher

- Merges #1048
- Fixes #994

lib/jasmine-core/jasmine.js

@@ -3138,8 +3138,8 @@ getJasmineRequireObj().toHaveBeenCalledTimes = function(j$) {
         var args = Array.prototype.slice.call(arguments, 0),
           result = { pass: false };
 
-        if(!expected){
-          throw new Error('Expected times failed is required as an argument.');
+        if (!j$.isNumber_(expected)){
+          throw new Error('The expected times failed is a required argument and must be a number.');
         }
 
         actual = args[0];
@@ -3156,7 +3156,6 @@ getJasmineRequireObj().toHaveBeenCalledTimes = function(j$) {
 
   return toHaveBeenCalledTimes;
 };
-
 getJasmineRequireObj().toHaveBeenCalledWith = function(j$) {
 
   function toHaveBeenCalledWith(util, customEqualityTesters) {