add pkg-config to dependencies

diff --git a/README.md b/README.md
index 96d7e938be2f2ca8cbf253e70213530827a547c4..870dcc4ab6d3dc0966f743c3a9ff5853168b659b 100644 (file)
--- a/README.md
+++ b/README.md
@@ -33,6 +33,7 @@ or reading the [rustc guide][rustcguidebuild].
    * `curl`
    * `git`
    * `ssl` which comes in `libssl-dev` or `openssl-devel`
+   * `pkg-config` if you are on compiling on Linux and targeting linux 
 
 2. Clone the [source] with `git`: