Copy developing mocha content correctly in Development.md

Signed-off-by: Kelechi Ebiri <[email protected]>

Author: TG199

.github/DEVELOPMENT.md

@@ -19,7 +19,7 @@ If you are having trouble, don't be afraid to [ask for help](./CONTRIBUTING.md#
 
 ## Developing Mocha
 
-When you contribute to mocha, you will probably want to try to run your changes on the test suite of another project. You can (and should) run the test suite of mocha itself before committing, but also confirming that your changes give the expected result on another project.
+When you contribute to mocha, you will probably want to try to run your changes on the test suite of another project. You can (and should) run the test suite of mocha itself before committing, but also confirming that your changes give the expected result on another project .
 
 For example, [WebSocket.io](https://github.com/LearnBoost/websocket.io/):
 
@@ -35,3 +35,13 @@ Replace the mocha dependency by the current git repository:
     $ cd node_modules/
     $ mv mocha/ mocha.save
     $ git clone https://github.com/visionmedia/mocha.git
+
+Install mocha's dependencies for the development version:
+
+    $ cd mocha
+    $ npm install
+
+Run websocket.io's test suite using the development version you just installed:
+
+    $ cd ../..
+    $ ./node_modules/.bin/mocha