README.md: Add words

Copied the description of the daemon from the second commit message.

Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Change-Id: Iac0d0b309b9cde65ea1f5ac525e86e83df87dcfe
diff --git a/README.md b/README.md
index e54cd42..b35488d 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,4 @@
-# phosphor-host-postd
\ No newline at end of file
+# LPC Snoop Broadcast Daemon
+
+This is a simple daemon which reads a file interface from an lpc-snoop driver
+and broadcasts the values read on DBus.
\ No newline at end of file