fix(core): update

ts/cloudflare.classes.zonemanager.ts

@@ -1,5 +1,7 @@
 import * as plugins from './cloudflare.plugins';
+import * as interfaces from './interfaces';
 import { CloudflareAccount } from './cloudflare.classes.account';
+import { CloudflareZone } from './cloudflare.classes.zone';
 
 export class ZoneManager {
   public cfAccount: CloudflareAccount;
@@ -9,5 +11,22 @@ export class ZoneManager {
     this.cfAccount = cfAccountArg;
   }
 
-  public getZones() {}
+  public async getZones(zoneName: string) {
+    let requestRoute = `/zones?per_page=50`;
+    // may be optionally filtered by domain name
+    
+    if (zoneName) {
+      requestRoute = `${requestRoute}&name=${zoneName}`;
+    }
+
+    const response: any = await this.cfAccount.request('GET', requestRoute);
+    const apiObjects: interfaces.ICflareZone[] = response.result;
+    
+    const cloudflareZoneArray = [];
+    for (const apiObject of apiObjects) {
+      cloudflareZoneArray.push(CloudflareZone.createFromApiObject(apiObject));
+    }
+
+    return cloudflareZoneArray;
+  }
 }