Add a CREDITS file.

It's about time we had one of these, and I don't want to imply that
the previous two commits for DFU compliance were mine. So credit their
author, Tormod Volden, in the single entry.

We can add more people as we go.

Signed-off-by: Marti Bolivar <[email protected]>

Author: Marti Bolivar

CREDITS

@@ -0,0 +1,12 @@
+This is at least a partial credits-file of people that have
+contributed to the Maple bootloader.  It is formatted the same way the
+Linux kernel CREDITS file is structured: sorted by name and formatted
+for easy processing.
+
+The fields are: name (N), email (E), web-address (W), description (D).
+
+----------
+
+N: Tormod Volden
+E: [email protected]
+D: Fixes for DFU compliance