middleware: change documentation filenames to README.md

middleware/file/README.md

@@ -0,0 +1,29 @@
+# file
+
+`file` enabled reading zone data from a RFC-1035 styled file.
+
+The etcd middleware makes extensive use of the proxy middleware to forward and query
+other servers in the network.
+
+## Syntax
+
+~~~
+file dbfile [zones...]
+~~~
+
+* `dbfile` the database file to read and parse.
+* `zones` zones it should be authoritative for. If empty the zones from the configuration block
+    are used.
+
+If you want to round robin A and AAAA responses look at the `loadbalance` middleware.
+
+~~~
+file dbfile [zones... ] {
+    transfer in|out
+}
+~~~
+
+* `transfer` enable zone transfers, for now only `transfer out` does something. It enables outgoing
+  zone transfers when defined.
+
+## Examples