Modify getting started example for version 4.0

docs/getting-started.md

@@ -17,10 +17,13 @@ $ npm install --save-dev gulp
 ```js
 var gulp = require('gulp');
 
-gulp.task('default', function(done) {
+gulp.task('default', defaultTask);
+
+function defaultTask(done) {
   // place code for your default task here
   done();
-});
+}
+
 ```
 
 #### 4. Run gulp:
@@ -37,7 +40,7 @@ To run individual tasks, use `gulp <task> <othertask>`.
 
 You have an empty gulpfile and everything is installed. How do you REALLY get started? Check out the [recipes](recipes) and the [list of articles](README.md#articles) for more information.
 
-## .src, .watch, .dest, CLI args - How do I use these things?
+## .src, .watch, .dest, .parallel, .serial, CLI args - How do I use these things?
 
 For API specific documentation you can check out the [documentation for that](API.md).