feat(#186): add proxy & rate limits example. Misc doc updates.

examples/deprecated/rest-contract-public.js

@@ -0,0 +1,21 @@
+/**
+ * This is the pure javascript version of the `rest-contract-public.ts` sample
+ */
+
+// To use a local build (testing with the repo directly), make sure to `npm run build` first from the repo root
+// const { ContractClient } = require('../dist');
+
+// or, use the version installed with npm
+const { ContractClient } = require('bybit-api');
+
+(async () => {
+  const client = new ContractClient();
+
+  try {
+    const orderbookResult = await client.getOrderBook('BTCUSDT', 'linear');
+    console.log('orderbook result: ', orderbookResult);
+  } catch (e) {
+    console.error('request failed: ', e);
+  }
+
+})();