Update README.mdown

Author: dadicool

README.mdown

@@ -17,13 +17,16 @@ Documentation
 
 Running the tests
 ------------------
-`
-$ git clone git://github.com/cocos2d/cocos2d-html5.git
-$ cd cocos2d-html5
-$ git submodule update --init
-$ python -m SimpleHTTPServer
-... and run a brower and open it in localhost:8000/tests
-`
+`$ git clone git://github.com/cocos2d/cocos2d-html5.git`
+
+`$ cd cocos2d-html5`
+
+`$ git submodule update --init`
+
+`$ python -m SimpleHTTPServer`
+
+... and run a brower and open it in `localhost:8000/tests`
+
 
 Contact us
 ------------------