PAN-2533: Updated docs with environment variable reading (Consensys#10)

README.md

@@ -8,8 +8,10 @@
 ## Initial setup
 1. Run `npm install`.
 1. Open `truffle-config.js`.
-1. Update `address` and `privateKey` variable to match your account and the corresponding private key.
-1. If your node is not using the default JSON-RPC host and port, update line 12 (`http://127.0.0.1:8545`) to match your node configuration.
+1. Create the following environment variables:
+    - `PANTHEON_NODE_PERM_ACCOUNT` - Set the value to the adress of the account used to interact with the permissioning contracts.
+    - `PANTHEON_NODE_PERM_KEY` - Set the value to the private key associated with the account.
+1. If your node is not using the default JSON-RPC host and port (`http://127.0.0.1:8545`), create a environment variable named `PANTHEON_NODE_PERM_ENDPOINT` and set its value to match your node endpoint.
 
 
 ## How to deploy and setup contracts
@@ -50,4 +52,4 @@ truffle(development)> { tx: '0xaecbc376089d8eba7154f93d08c6be3bdf7fa13bfe2d8dbdf
 undefined
 ```
 
-After this step, you should have the enode added to your whitelist. Please repeat this step for each enode that you want to add to the whitelist.
+After this step, you should have the enode added to your whitelist. Please repeat this step for each enode that you want to add to the whitelist.

truffle-config.js

@@ -1,15 +1,24 @@
 const HDWalletProvider = require('truffle-hdwallet-provider');
+const dotenv = require('dotenv');
+
+dotenv.config();
 
 /* The adress used when sending transactions to the node */
-var address = "0xfe3b557e8fb62b89f4916b721be55ceb828dbd73";
+var address = process.env.PANTHEON_NODE_PERM_ACCOUNT;
 
 /* The private key associated with the address above */
-var privateKey = "8f2a55949038a9610f50fb23b5883af3b4ecb3c3bb792cbcefbd1542c692be63";
+var privateKey = process.env.PANTHEON_NODE_PERM_KEY;
+
+/* The endpoint of the Ethereum node */
+var endpoint = process.env.PANTHEON_NODE_PERM_ENDPOINT;
+if (endpoint === undefined) {
+  endpoint = "http://127.0.0.1:8545";
+}
 
 module.exports = {
   networks: {
     development: {
-     provider: () => new HDWalletProvider(privateKey, "http://127.0.0.1:8545"),
+     provider: () => new HDWalletProvider(privateKey, endpoint),
      host: "127.0.0.1",
      port: 8545,
      network_id: "*",