add manifest

MANIFEST.md

@@ -0,0 +1,18 @@
+brief: some utility blocks
+author:
+  - Bastian Bloessl <bloessl@ccs-labs.org>
+copyright_owner:
+  - Bastian Bloessl
+dependencies:
+  - gnuradio (>= 3.7.4)
+repo: https://github.com/bastibl/gr-foo.git
+tags:
+  - foo
+website: https://github.com/bastibl/gr-foo
+title: gr-foo
+icon: http://www.ccs-labs.org/projects/wime/wime.png
+---
+This is a collection of custom blocks that are not directly associated with a project. For sample applications see:
+
+https://github.com/bastibl/gr-ieee802-11
+https://github.com/bastibl/gr-ieee802-15-4