[libglnx] Update README

[Colin Walters <walters src gnome org>]

commit ba67dd39a7d5cc779f83bb22512740cdb4c61b33
Author: Colin Walters <walters verbum org>
Date:   Sun Feb 15 11:57:15 2015 -0500

    Update README

 README    |   10 ----------
 README.md |    4 ++++
 2 files changed, 4 insertions(+), 10 deletions(-)
---
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..1767a2d
--- /dev/null
+++ b/README.md
@@ -0,0 +1,4 @@
+libglnx is the successor to libgsystem: https://git.gnome.org/browse/libgsystem
+
+It is for modules which depend on both GLib and Linux, intended to be
+used as a git submodule.