[gnome-runtime-images/wip/antoniof/add-readme] Add README.md

[António Fernandes <antoniof src gnome org>]

commit 7e16998b918862bced4dca50ce4d1d4b058bf17a
Author: António Fernandes <antoniojpfernandes gmail com>
Date:   Wed Sep 18 20:35:36 2019 +0000

    Add README.md
    
    The purpose of this repository is described in the DOAP file.
    
    Unfortunately, GitLab doesn't present the DOAP description in the project's home page.
    
    So, copy the description to a README file.

 README.md | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..830ffad
--- /dev/null
+++ b/README.md
@@ -0,0 +1 @@
+Pre built container images of the GNOME runtime to be used for building and testing Flatpaks in the CI.
\ No newline at end of file