diff --git a/README.md b/README.md
index 367144fca..0075fe1ba 100644
--- a/README.md
+++ b/README.md
@@ -100,6 +100,33 @@ Scenario('test some forms', (I) => {
 All actions are performed by I object; assertions functions start with `see` function. 
 In this examples all methods of I are taken from WebDriverIO helper, see [reference](https://github.com/Codeception/CodeceptJS/blob/master/docs/API.md#webdriverio) to learn how to use them.
 
+Let's execute this test with `run` command. Additional option `--steps` will show us the running process. We recommend use `--steps` or `--debug` during development. 
+
+```
+codeceptjs run --steps
+```
+
+This will produce an output:
+
+```
+CodeceptJS Demonstration --
+ test some forms
+ • I am on page "http://simple-form-bootstrap.plataformatec.com.br/documentation"
+ • I fill field "Email", "hello@world.com"
+ • I fill field "Password", "123456"
+ • I check option "Active"
+ • I check option "Male"
+ • I click "Create User"
+ • I see "User is valid"
+ • I dont see in current url "/documentation"
+ ✓ OK in 17752ms
+```
+
+CodeceptJS has an ultimate feature to help you develop and debug you test. 
+You can **pause execution of test in any place and use interactive shell** to try different actions and locatots.
+Just add `pause()` call at any place in test and run it. 
+
+
 We filled form with `fillField` methods, which located form elements by their label. 
 The same way you can locate element by name, CSS or XPath locators in tests:
 
diff --git a/lib/interfaces/codeceptjs.js b/lib/interfaces/codeceptjs.js
new file mode 100644
index 000000000..aea9bf018
--- /dev/null
+++ b/lib/interfaces/codeceptjs.js
@@ -0,0 +1,102 @@
+/**
+ * Module dependencies.
+ */
+
+var Suite = require('mocha/lib/suite');
+var Test = require('mocha/lib/test');
+var event = require('../event');
+var scenario = require('../scenario');
+
+/**
+ * Codecept-style interface:
+ *
+ * Feature('login')
+ * Scenario('login as regular user', (I) {
+ *   I.fillField();
+ *   I.click()
+ *   I.see('Hello, '+data.login);
+ * });
+ *
+ * @param {Suite} suite Root suite.
+ */
+module.exports = function(suite) {
+  var suites = [suite];
+
+  suite.on('pre-require', function(context, file, mocha) {
+    var common = require('mocha/lib/interfaces/common')(suites, context);
+
+    common.before('codeceptjs event', function() {
+      event.dispatcher.emit(event.suite.before);
+    });
+
+    common.after('codeceptjs event', function() {
+      event.dispatcher.emit(event.suite.after);
+    });    
+
+    // create dispatcher
+
+    context.BeforeAll = common.before;
+    context.AfterAll = common.after;
+    
+    context.run = mocha.options.delay && common.runWithSuite(suite);
+    /**
+     * Describe a "suite" with the given `title`
+     * and callback `fn` containing nested suites
+     * and/or tests.
+     */
+
+    context.Feature = function(title) {
+      var suite = Suite.create(suites[0], title);
+      suite.file = file;
+      suite.beforeEach('codeceptjs.before', scenario.setup);
+      suite.afterEach('finialize codeceptjs', scenario.teardown);
+      suites.unshift(suite);
+      return suite;
+    };
+
+    context.Background = context.Before = function(fn) {
+      suites[0].beforeEach('Before', scenario.injected(fn)); 
+    }
+    
+    context.After = function(fn) {
+      suites[0].afterEach('After', scenario.injected(fn)); 
+    }
+   
+    /**
+     * Describe a specification or test-case
+     * with the given `title` and callback `fn`
+     * acting as a thunk.
+     */
+
+    context.Scenario = function(title, fn) {
+      var suite = suites[0];
+      if (suite.pending) {
+        fn = null;
+      }
+      suite.timeout(0);
+      var test = new Test(title, fn);
+      test.file = file;
+      test.async = true;
+      test.timeout(0);
+      suite.addTest(scenario.test(test));
+      return test;
+    };
+
+    /**
+     * Exclusive test-case.
+     */
+    context.Scenario.only = function(title, fn) {
+      var test = context.it(title, fn);
+      var reString = '^' + escapeRe(test.fullTitle()) + '$';
+      mocha.grep(new RegExp(reString));
+      return test;
+    };
+
+    /**
+     * Pending test case.
+     */
+    context.xScenario = context.Scenario.skip = function(title) {
+      context.Scenario(title);
+    };
+  });
+};
diff --git a/package.json b/package.json
index 6abe88f24..aa899fb73 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "codeceptjs",
-  "version": "0.1.3",
+  "version": "0.1.4",
   "description": "Modern Era Aceptance Testing Framework for NodeJS",
   "homepage": "http://codecept.io",
   "repository": "Codeception/codeceptjs",