Stop having clibrojo as a default project, update docs

Cargo.toml

@@ -33,7 +33,6 @@ default-members = [
     ".",
     "rojo-test",
     "rojo-insta-ext",
-    "clibrojo",
 ]
 
 [lib]

clibrojo/README.md

@@ -2,3 +2,18 @@
 This is an experiment to expose a C API for Rojo that would be suitable for embedding it into an existing C/C++ application.
 
 I'm hoping to expand it to drop the HTTP layer and communicate through a channel, which could make it feasible to embed into an existing Roblox IDE with minimal changes or additional code.
+
+## Building
+This project is currently not built by default and could break/disappear at any time.
+
+```bash
+cargo build -p clibrojo
+```
+
+On Windows, Cargo will generate a `clibrojo.dll` and associated `.lib` file. Link these into your project.
+
+To generate the associated C header file to include in the project, use [cbindgen](https://github.com/eqrion/cbindgen):
+
+```bash
+cbindgen --crate clibrojo --output include/rojo.h
+```