Merge branch 'feat/improveErrorMessages' of https://github.com/dhoko/jasmine into dhoko-feat/improveErrorMessages

- Merges #1026 from @dhoko
- Fixes #1025

spec/core/formatErrorMsgSpec.js

@@ -0,0 +1,13 @@
+describe('formatErrorMsg', function () {
+  it('should format an error with a domain', function() {
+    var formator = jasmineUnderTest.formatErrorMsg('api');
+    expect(formator('message')).toBe('api : message');
+    expect(formator('message2')).toBe('api : message2');
+  });
+
+  it('should format an error with a domain and usage', function() {
+    var formator = jasmineUnderTest.formatErrorMsg('api', 'with a param');
+    expect(formator('message')).toBe('api : message\nUsage: with a param');
+    expect(formator('message2')).toBe('api : message2\nUsage: with a param');
+  });
+});