Add doc for server's confs

- Resolve #141

Author: vqhuy

keyserver/README.md

@@ -36,7 +36,8 @@ Use "coniksserver [command] --help" for more information about a command.
 is for the registration proxy, the second is the server's public address
 for "read-only" requests (lookups, monitoring etc).
 - Edit the configuration file as needed:
-    - Replace the `epoch_deadline` with the desired duration in seconds.
+    - Replace the `loaded_history_length` with the desired number of snapshots kept in memory.
+    - Replace the `epoch_deadline` with the desired duration in **seconds**.
     - If using a CONIKS registration proxy, replace the registration proxy `address`. Otherwise, remove the registration proxy `addresses` entry, and add `allow_registration = true` field to the public `addresses` entry.
     - In either case, replace the public `address` with the server's public CONIKS address.
 - Test setup (no registration proxy) config file example:

keyserver/server.go

@@ -65,7 +65,7 @@ type Address struct {
 
 // ServerPolicies contains a server's CONIKS policies configuration
 // including paths to the VRF private key, the signing private
-// key and the epoch deadline value.
+// key and the epoch deadline value in seconds.
 type ServerPolicies struct {
 	EpochDeadline protocol.Timestamp `toml:"epoch_deadline"`
 	VRFKeyPath    string             `toml:"vrf_key_path"`