Adding configuration documentation and the config file in the gitignore

.gitignore

@@ -2,3 +2,4 @@ styx-poc
 *.json
 *.txt
 styx
+config.yml

README.md

@@ -8,6 +8,25 @@ go build
 ./styx
 ```
 
+### Example configuration:
+```
+// config.yml
+shodan:
+  key: REQUIRED
+
+// do not forget to set up kafka and create the topic
+kafka:
+  protocol: tcp
+  host: localhost
+  port: 9092
+  topic: styx
+  partition: 0
+
+balboa:
+  url: REQUIRED
+
+```
+
 ## Datastructure
 
 ### Meta