readme with some explanations and how to start

README.md

@@ -1,3 +1,24 @@
 # jlchain
 small blockchain project
 
+
+## prerequisites
+install all required node modules<br>
+```npm install```
+
+
+## run the chain
+### Run the Bootnode / peer
+bootnode / peer starts by default on HTTP_PORT 3001 and P2P_PORT 5001:<br>
+```npm run dev```<br>
+
+### run additional peers
+second peer which uses the predefined 5001 bootnode port to connect:<br>
+```HTTP_PORT=3002 P2P_PORT=5002 PEERS=ws://localhost:5001 npm run dev```
+
+third peer connects to both nodes:<br>
+```HTTP_PORT=3003 P2P_PORT=5003 PEERS=ws://localhost:5001,ws://localhost:5002 npm run dev```
+
+## ports explanation
+HTTP_PORT: used to communicate with the node from a users or miners perspective.<br>
+P2P_PORT: peer-to-peer port used by other nodes to exchange block / transaction information between nodes via websocket connection.<br>