diff --git a/README.md b/README.md
index 4089808..10811ec 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,14 @@
-# librpitx
-Radio frequency transmitter library - Engine of rpitx
+**librpitx** Radio frequency transmitter library for Raspberry Pi (B, B+, PI2, PI3 and PI zero)
+
+It is now the base of *rpitx* project, separate from application
+
+_Copyright (c) Evariste Courjaud F5OEO. Code is GPL_V3
+
+# Installation
+Depends on https://github.com/jgaeddert/liquid-dsp/
+
+```sh
+git clone https://github.com/F5OEO/librpitx
+cd librpitx/src
+make
+```