Add instructions to add self to dialout group.

cedws · cedws · commit d7c6e4bafd88 · 2018-08-01T20:05:09.000+01:00
diff --git a/bx/guide.md b/bx/guide.md
@@ -48,6 +48,12 @@ Connect your TinyFPGA BX board(s) and make sure the bootloader is up to date by
 tinyprog --update-bootloader
 ```
 
+On Unix systems, you may need to add yourself to the `dialout` group in order for your user to be able to access serial ports. You can do that by running:
+
+```
+sudo usermod -a -G dialout $USER
+```
+
 This command will check for bootloader updates for all of the connected boards.  This is important to do to ensure your boards have the latest bootloaders with any known bugs fixed.
 
 ### 3. Download and install [Atom](https://atom.io/).
