README.md: add file
Add deprecation notice and instructions.
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Change-Id: If9b45b7e132dae7b2a6aadfbff028cfde22c9faf
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+# phosphor-rest-server
+
+Phosphor REST server was the original OpenBMC webserver. All of it's features
+have long since been implemented in
+[bmcweb](https://github.com/openbmc/bmcweb), and if you are looking for a
+webserver for your BMC, you should certainly use that before using this.
+Phosphor REST server is not maintained and very likely has security bugs.