Merge pull request #13 from Offirmo/master

enhanced README with contributing instructions

Author: czerwingithub

README.md

@@ -91,3 +91,15 @@ Track By does not work. Use at your own peril.
 </table>
 
 Please contact [email protected] for any questions or problems.
+
+== Contributing ==
+
+```
+npm install -g karma karma-cli karma-jasmine karma-chrome-launcher
+```
+
+Then from root directory :
+```
+./scripts/buildScalyr.js
+./scripts/startJsTester
+```