code: function isAvailable( error, bool ) {
  		if ( error ) {
  			return clbk( error );
  		}
  		if ( !bool ) {
  			error = new Error( 'invalid option. Package name is not available on NPM. Option: `' + opts.name + '`.' );
  			return clbk( error );
  		}
  		fs.readFile( fpath, {'encoding':'utf8'}, onRead );
  	}
docs: FUNCTION: isAvailable( error, bool )
  Callback invoked upon checking NPM name availability.
  
  @private
  @param {Error|Null} error - error object
  @param {Boolean} bool - boolean indicating whether an NPM name is available