add simple configuration

ckpool.simple.conf

@@ -0,0 +1,26 @@
+{
+"btcd" :  [
+        {
+                "url" : "http://127.0.0.1:8332",
+                "auth" : "me",
+                "pass" : "solo",
+                "notify" : true
+        }
+],
+"btcaddress" : "bc1q8rqhd5yfxnhsxv5ltktarqc9v2tfqp58kda3s3",
+"btcsig" : "/mined by ck/",
+"blockpoll" : 100,
+"nonce1length" : 4,
+"nonce2length" : 8,
+"update_interval" : 30,
+"version_mask" : "1fffe000",
+"serverurl" : [
+	"127.0.0.1:3333"
+],
+"mindiff" : 1,
+"startdiff" : 42,
+"maxdiff" : 0,
+"logdir" : "logs",
+"zmqblock" : "tcp://127.0.0.1:28332"
+}
+Comments from here on are ignored.