docs: function run(cmd){
  
          var proc = require('child_process'),
              done = grunt.task.current.async(); // Tells Grunt that an async task is complete
  
          proc.exec(cmd,
              function(error, stdout, stderr){
                  if(stderr){
                      grunt.log.writeln('ERROR: ' + stderr).error();
                  }
                  grunt.log.writeln(stdout);
                  done(error);
              }
          );
      }