Rename default tests to “integration” 🐝

Author: pirelenito

lib/index.spec.js lib/index.integration.spec.jslib/index.spec.js renamed to lib/index.integration.spec.js

@@ -15,7 +15,7 @@ var targetGitRepository = path.join(__dirname, '../tmp/project/.git')
 
 var targetBuild = path.join(__dirname, '../tmp/build')
 
-describe('git-revision-webpack-plugin', function () {
+describe('git-revision-webpack-plugin (integration)', function () {
   beforeEach(function (done) {
     fs.emptyDirSync(targetProject)
     fs.copySync(sourceProject, targetProject)