code: function exists( path, clbk ) {
  	fcn( path, done );
  
  	/**
  	* FUNCTION: done( error )
  	*	Callback invoked performing a filesystem call.
  	*
  	* @private
  	* @param {Error|Null} error - error object
  	*/
  	function done( error ) {
  		if ( clbk.length === 2 ) {
  			if ( error ) {
  				return clbk( error, false );
  			}
  			return clbk( null, true );
  		}
  		if ( error ) {
  			return clbk( false );
  		}
  		return clbk( true );
  	}
  }
docs: EXISTS // 
  FUNCTION: exists( path, clbk )
  Tests whether a path exists on the filesystem.
  
  @param {String} path - path to test
  @param {Function} clbk - callback to invoke after testing path existence
  @returns {Void}