add instrument in interface

Author: Ubayed-Bin-Sufian

sounds/samples/README.md

@@ -56,9 +56,6 @@ on one line.
                {'name': 'piano', 'data': PIANO_SAMPLE},
    ```
 
-
-
-
 * Add your new sample name to the list of string that need translation
 in `js/utils/musicutils.js`
 
@@ -67,3 +64,5 @@ in `js/utils/musicutils.js`
    const SELECTORSTRINGS = [
        _('piano'),
    ```
+
+* Ensure that your new instrument is recognized in the interface in `js/js-export/interface.js`