mitmproxy-linux: add build dependency section

mitmproxy-linux/README.md

@@ -5,9 +5,19 @@ This package contains the following precompiled binaries for Linux:
  - `mitmproxy-linux-redirector`: A Rust executable that redirects traffic to mitmproxy via eBPF.
 
 
+## Build Dependencies
+
+This package requires the following software to build (via https://aya-rs.dev/book/start/development/#prerequisites):
+
+ - Rust nightly.
+ - [bpf-linker]: `cargo install --locked bpf-linker`
+
 ## Redirector Development Setup
 
-1. Install [bpf-linker](https://github.com/aya-rs/bpf-linker): `cargo install --locked bpf-linker`
-2. Run `pip install -e .` to install `mitmproxy_linux` as editable.
+1. Install build dependencies (see above).
+2. Install mitmproxy_linux as editable: `pip install -e .`
 3. Run something along the lines of `mitmdump --mode local:curl`.  
    You should see a `Development mode: Compiling mitmproxy-linux-redirector...` message.
+
+
+[bpf-linker]: https://github.com/aya-rs/bpf-linker