update readme

Author: lucarin91

README.md

@@ -1 +1,12 @@
 # qdl-packing
+
+This repository contains the release pipeline to build [qdl](https://github.com/linux-msm/qdl) statically on multiple platforms:
+- Linux 64bit
+- Linux 32bit
+- Linux ARMv6
+- Linux ARM64
+- MacOS 64bit
+- Windows 32bit
+
+The compilation workflow uses the [arduino/crossbuild](https://github.com/arduino/crossbuild) docker image, wich container all the needed dependencies and toolchanin.
+