added frontend description to readme maintainers

README_maintainers.md

@@ -639,3 +639,34 @@ If there is a third argument and it is "D", then all servers are started
 up in the GNU debugger in separate windows (using `xterm`s). In that
 case one has to hit ENTER in the original terminal where the script runs
 to continue, once all processes have been start up in the debugger.
+
+Front-End (WebUI)
+=========
+
+To see the changes of possible modifications in javascript files, templates
+and scss files please use grunt to generate the bundled version. 
+
+To install grunt (with all related dependencies), just go to the frontend app
+folder (/js/apps/system/_admin/aardvark/APP) and run: 
+
+`npm install`
+
+On Mac OS you also have to install grunt-cli:
+
+`(sudo) npm install -g grunt-cli`
+
+Then you can choose between three choices:
+
+1. Build all arangodb related files:
+
+`grunt`
+
+2. Build all arangodb related files, including libraries. This should always
+be used when we offer a new major release of arangodb.
+
+`grunt deploy`
+
+2. Live build arangodb related files, when a file has been changed. This task
+does not include the minifying process.
+
+`grunt watch`