Added opertaion order demo

Author: JaimeSalas

03 Run to completion/.gitignore renamed to .gitignore

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+## What is the order of the prinrt numbers in console?
+
+1, 5, 2, 4, 3
+
+* `setTimeout`, is another function that plans another async function, as web request would do.
+* We obtain this result due to run to completion.
+* The browser gives to these function a min value of 4ms.

04 Operation Order/README.md

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+'use strict';
+
+const gulp = require('gulp'),
+  connect = require('gulp-connect'),
+  open = require('gulp-open'),
+  options = {
+    port: 9005,
+    root: ['src'],
+    devBase: 'http://localhost:',
+    browsers: ['safari', 'chrome']
+  },
+  openOptions = {
+    uri: options.devBase + options.port,
+    app: options.browser
+  };
+
+  gulp.task('connect', () => connect.server({
+    root: options.root,
+    port: options.port
+  }));
+  // https://github.com/stevelacy/gulp-open/issues/15
+  gulp.task('open', () => gulp.src(__filename).pipe(open(openOptions)));
+
+gulp.task('default', ['connect', 'open']);