Add script to clean cgminer config

fix_config.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+# Clean cgminer config for SHA256
+
+CONF="/opt/necrohash/cgminer.conf"
+
+cat <<EOF > "$CONF"
+{
+    "pools": [
+        {
+            "url": "stratum+tcp://solo.ckpool.org:3333",
+            "user": "144N35t62x8qC21eQ8qW2q2q2q2q2q2q2q",
+            "pass": "x"
+        }
+    ],
+    "api-listen": true,
+    "api-allow": "W:127.0.0.1",
+    "gridseed-options": "freq=850,chips=5",
+    "kernel-path": "/usr/local/bin"
+}
+EOF
+
+chown pi:pi "$CONF"
+chmod 644 "$CONF"
+echo "Config cleaned."