Update README.md to include plug submodule

I _think_ this is correct? I was going nuts trying to figure out how Gwion was supposed to actually make sound ...

diff --git a/README.md b/README.md
index 49e6aad605848afbb161634532512973236994f9..e98fd26c2aa992e8b4272b76650b9f2bafd32fd4 100644 (file)
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ You might just want the minimum to start with, try
 ``` sh
 git clone https://github.com/fennecdjay/Gwion
 cd Gwion
-git submodule update --init util ast
+git submodule update --init util ast plug
 make
 ```
 
@@ -40,6 +40,7 @@ Please rebuild to take your change into account.
 ```
 make -C util clean
 make -C ast  clean
+make -C plug clean
 make clean
 make
 ```