code: function kill( proc, callback ){
      var arg = isNumber( proc ) ? '/F /PID ' + proc : '/F /IM ' + proc;
  
      if ( isNumber( proc ) || isString( proc )){
          exec( taskKillPath + arg, function( err ){
              if( callback ) callback( err )
          })
      } else {
          callback( new Error( 'The first kill() argument provided is neither a string nor an integer (not a valid process).' ))
      }
  }
docs: Kill a given process name or PID