Update README

Author: nowrep

README.md

@@ -1,2 +1,13 @@
 # dvcp-vaapi
-DaVinci Resolve VAAPI encoder plugin
+DaVinci Resolve VAAPI encoder plugin. Studio is required, free version doesn't support plugins.
+
+## Install
+
+Extract the release into directory *IOPlugins* in the Resolve install directory (default `/opt/resolve/IOPlugins`).
+
+## Build
+
+```sh
+meson setup build
+meson compile -C build
+```