chore(): updated examples

examples/rest-private-spot.ts

@@ -7,6 +7,10 @@ import { RestClientV2 } from '../src/index';
 const API_KEY = process.env.API_KEY_COM;
 const API_SECRET = process.env.API_SECRET_COM;
 const API_PASS = process.env.API_PASS_COM;
+// If running from CLI in unix, you can pass env vars as such:
+// API_KEY_COM=‘lkm12n3-2ba3-1mxf-fn13-lkm12n3a’ API_SECRET_COM='035B2B9637E1BDFFEE2646BFBDDB8CE4' API_PASSPHRASE_COM='ComplexPa$$!23$5^' ts-node examples/rest-private-spot.ts
+
+// note the single quotes, preventing special characters such as $ from being incorrectly passed
 
 const client = new RestClientV2({
   apiKey: API_KEY,