Rename angular.foreach to angular.forEach to make the api consistent.

camelcase is used for other angular functions and forEach is also
used by EcmaScript standard.

- rename the internal as well as the external function name
- tweak the implementation of the function so that it doesn't
  clober it self when we extend the angular object with an
  object that has a forEach property equal to this forEach function

Closes #85

src/scenario/ObjectModel.js

@@ -19,7 +19,7 @@ angular.scenario.ObjectModel = function(runner) {
 
   runner.on('SpecBegin', function(spec) {
     var block = self.value;
-    angular.foreach(self.getDefinitionPath(spec), function(def) {
+    angular.forEach(self.getDefinitionPath(spec), function(def) {
       if (!block.children[def.name]) {
         block.children[def.name] = {
           id: def.id,