Modify describe for ouiMessage and add file to gitignore

Author: Dounia Boujnane

.gitignore

@@ -2,3 +2,4 @@
 coverage
 node_modules
 *.log
+.idea

packages/oui-message/src/index.spec.js

@@ -1,6 +1,6 @@
 import { filter } from "lodash";
 
-describe("oui-message: ", () => {
+describe("ouiMessage: ", () => {
 
     let TestUtils;
     beforeEach(angular.mock.module("oui.message"));