Move example configurations and update docs. Fixed #150

example-configs/config.json

@@ -0,0 +1,10 @@
+{
+  "sinks-file": "./sinks.json",
+  "collectors-file" : "./collectors.json",
+  "receivers-file" : "./receivers.json",
+  "router-file" : "./router.json",
+  "main" : {
+    "interval": "10s",
+    "duration": "1s"
+  }
+}