Add Fundamental, update README

.gitmodules

@@ -1,3 +1,7 @@
 [submodule "repos/AudibleInstruments"]
 	path = repos/AudibleInstruments
 	url = https://github.com/VCVRack/AudibleInstruments.git
+[submodule "repos/Fundamental"]
+	path = repos/Fundamental
+	url = https://github.com/VCVRack/Fundamental.git
+	branch = master

README.md

@@ -1,7 +1,17 @@
 # VCV Community repository
 
 
-## Building repos
+## Package team
 
-- Clone all repos with `git submodule update --init --recursive`
-- Build all repos with `RACK_DIR=<path to Rack directory> make dist_all`
+### Building repos
+
+Clone all repos with `git submodule update --init --recursive`
+
+Then build all repos with `RACK_DIR=<path to Rack directory> make dist_all`
+
+### Adding a repo
+
+The folder name should match the slug, even if it is not the repository name.
+Be sure to check out the correct branch.
+
+`git submodule add -b v0.6 https://github.com/VCVRack/Fundamental.git Fundamental`

repos/Fundamental

@@ -0,0 +1 @@
+Subproject commit eba641ca04e2dc2089a15ee4cb89de5dbed96d6d