Rename the developer's readme file to CODING as a home
for developer related information.
Change-Id: I8c2cf70258671387b926ef3d666f6476056ef06e
Reviewed-on: http://gerrit.openafs.org/10973
Reviewed-by: Chas Williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: D Brashear <shadow@your-file-system.com>
