add $exceptionHandler service

src/services.js

@@ -75,6 +75,12 @@ angularService("$log", function($window){
   };
 }, {inject:['$window']});
 
+angularService('$exceptionHandler', function($log){
+  return function(e) {
+    $log.error(e);
+  };
+}, {inject:['$log']});
+
 angularService("$hover", function(browser, document) {
   var tooltip, self = this, error, width = 300, arrowWidth = 10, body = jqLite(document[0].body);;
   browser.hover(function(element, show){

test/servicesSpec.js

@@ -66,6 +66,15 @@ describe("service", function(){
     });
   });
 
+  describe("$exceptionHandler", function(){
+    it('should log errors', function(){
+      var error = '';
+      $log.error = function(m) { error += m; };
+      scope.$exceptionHandler('myError');
+      expect(error).toEqual('myError');
+    });
+  });
+
   describe("$location", function(){
     it("should inject $location", function(){
       scope.$location.parse('http://host:123/p/a/t/h.html?query=value#path?key=value');