updated readme again

README.md

@@ -70,11 +70,18 @@ Debian/Ubuntu
 sudo apt install openocd
 ```
 
+Gentoo
+```
+sudo emerge -a openocd
+```
+
 
 #### Rustlang
 
 Doesn't get any easier than this: https://www.rust-lang.org/tools/install
 
+If you're on gentoo, I recommend using rust-bin. You likely don't need these instructions, but [here](https://wiki.gentoo.org/wiki/User:Vazhnov/Knowledge_Base:replace_rust_with_rust-binhttps://wiki.gentoo.org/wiki/User:Vazhnov/Knowledge_Base:replace_rust_with_rust-bin) they are just in case.
+
 ### Instructions for testing
 
 **WARNING**: DO NOT COPY AND PASTE THESE INSTRUCTIONS. READ THROUGH THEM.
@@ -156,7 +163,6 @@ source [find target/atsame5x.cfg]
 
 openocd -f same54.cfg
 ```
-
 Now in another terminal:
 ```
 cd <project_dir>/igloo/targets/same54p20a/