Update snippets in README

Author: gcatanese

README.md

@@ -89,10 +89,10 @@ Check for breaking changes on the [releases page](https://github.com/Adyen/adyen
 
 ``` javascript
 // Step 1: Require the parts of the module you want to use
-const { Client, CheckoutAPI} = require('@adyen/api-library');
+const { Client, CheckoutAPI, EnvironmentEnum} = require('@adyen/api-library');
 
 // Step 2: Initialize the client object
-const client = new Client({apiKey: "YOUR_API_KEY", environment: "TEST"}); 
+const client = new Client({apiKey: "YOUR_API_KEY", environment: EnvironmentEnum.TEST}); 
 
 // Step 3: Initialize the API object
 const checkoutApi = new CheckoutAPI(client);
@@ -143,7 +143,7 @@ Use the Node.js `require` function to load the `Client` and API objects from the
 For example, to use the [Checkout API](https://docs.adyen.com/api-explorer/Checkout/70/overview):
 
 ``` javascript
-const { Client, CheckoutAPI} = require('@adyen/api-library');
+const { Client, CheckoutAPI, EnvironmentEnum} = require('@adyen/api-library');
 ```
 
 ### Step 2: Initialize the client object
@@ -155,7 +155,7 @@ Initialize the client object, passing the following:
 For example:
 
 ``` javascript
-const client = new Client({apiKey: "YOUR_API_KEY", environment: "TEST"}); 
+const client = new Client({apiKey: "YOUR_API_KEY", environment: EnvironmentEnum.TEST}); 
 ```
 
 ### Step 3: Initialize the API object
@@ -208,18 +208,18 @@ checkoutApi.PaymentsApi.payments(paymentRequest)
 
 For APIS that require your [Live URL Prefix](https://docs.adyen.com/development-resources/live-endpoints#live-url-prefix) (Binlookup, BalanceControl, Checkout, Payout and Recurring) the client is set up as follows in order to start processing live payments:
 ``` typescript
-const { Client } = require('@adyen/api-library');
+const { Client, EnvironmentEnum } = require('@adyen/api-library');
 
-const client = new Client({apiKey: "YOUR_API_KEY", environment: "LIVE", liveEndpointUrlPrefix: "YOUR_LIVE_URL_PREFIX"}); 
+const client = new Client({apiKey: "YOUR_API_KEY", environment: EnvironmentEnum.LIVE, liveEndpointUrlPrefix: "YOUR_LIVE_URL_PREFIX"}); 
 ```
 
 ### Usage in TypeScript
 
 Alternatively, you can use the `Types` included in this module for Typescript and `async` syntax.
 
 ``` typescript
-  const { Client, CheckoutAPI, Types } = require('@adyen/api-library');
-  const client = new Client({apiKey: "YOUR_API_KEY", environment: "LIVE", liveEndpointUrlPrefix: "YOUR_LIVE_URL_PREFIX"});
+  const { Client, EnvironmentEnum, CheckoutAPI, Types } = require('@adyen/api-library');
+  const client = new Client({apiKey: "YOUR_API_KEY", environment: EnvironmentEnum.LIVE, liveEndpointUrlPrefix: "YOUR_LIVE_URL_PREFIX"});
 
   const makePaymentsRequest = async () => {
     const paymentsRequest : Types.checkout.PaymentRequest = {
@@ -332,7 +332,7 @@ const client = new Client({ config });
 const httpClient = new HttpURLConnectionClient();
 httpClient.proxy = { host: "http://google.com", port: 8888,  };
 
-client.setEnvironment('TEST');
+client.setEnvironment(EnvironmentEnum.TEST);
 client.httpClient = httpClient;
 
 // ... more code
@@ -343,12 +343,12 @@ For In-Person Payments integrations with the [Cloud Terminal API](https://docs.a
 ``` javascript
 // Step 1: Require the parts of the module you want to use
 const {Client, TerminalCloudAPI} from "@adyen/api-library";
-const { Config, RegionEnum } = require("@adyen/api-library");
+const { Config, EnvironmentEnum, RegionEnum } = require("@adyen/api-library");
 
 // Step 2: Initialize the client object
 const config = new Config({
     apiKey: "YOUR_API_KEY",
-    environment: "LIVE",
+    environment: EnvironmentEnum.LIVE,
     region: RegionEnum.US
 });
 const client = new Client(config);