updated readme

README.md

@@ -22,11 +22,21 @@ $ npm install
 ```
 
 ### Run tests
-The tests for nightwatch are written using [nodeunit](https://github.com/caolan/nodeunit) as the test framework. To run the nodeunit tests do:
+The tests for Nightwatch are written using [Mocha](http://mochajs.org/) exports interface but they can also be run with Nightwatch itself.
+
+To run the unit tests using mocha, do:
+
 ```sh
 $ npm test
 ```
 
+To run the unit tests using Nightwatch, do:
+
+```sh
+$ npm run unit-tests
+```
+
+
 ### Discuss
 The [Mailing List/Google Group](https://groups.google.com/forum/#!forum/nightwatchjs) is the most appropriate tool for Nightwatch related discussions. In addition, there is a [StackOverflow Nightwatch.js tag](http://stackoverflow.com/questions/tagged/nightwatch.js) at your disposal and [Twitter](https://twitter.com/nightwatchjs).
 

package.json

@@ -50,11 +50,10 @@
   "man": "",
   "scripts": {
     "jshint": "./node_modules/.bin/jshint --verbose --config .jshintrc lib/",
-    "coverage": "jscoverage lib --exclude *.ejs,*.json && NIGHTWATCH_COV=1 node ./tests/run_tests.js lcov > ./lib-cov/lcov.info",
     "mocha-coverage": "jscoverage lib --exclude *.ejs,*.json && NIGHTWATCH_COV=1 ./node_modules/.bin/mocha test/src --reporter html-cov > coverage.html",
     "mocha-lcov-coverage": "jscoverage lib --exclude *.ejs,*.json && NIGHTWATCH_COV=1 ./node_modules/.bin/mocha test/src --reporter mocha-lcov-reporter > lib-cov/coverage.lcov",
     "test": "./node_modules/.bin/mocha test/src",
-    "unittests": "./bin/nightwatch -c test/nightwatch.json"
+    "unit-tests": "./bin/nightwatch -c test/nightwatch.json"
   },
   "files": [
     "bin",