add getContracts

Author: lyddream

package.json

@@ -1,6 +1,6 @@
 {
   "name": "loopring.js",
-  "version": "2.0.3",
+  "version": "2.0.4",
   "description": "Loopring javascript library",
   "scripts": {
     "lint": "eslint . --fix",

src/relay/rpc/order.js

@@ -61,6 +61,11 @@ export default class Order
     {
         return getTempStore(this.host, filter);
     }
+
+    getContracts ()
+    {
+        return getContracts(this.host);
+    }
 }
 
 /**
@@ -368,3 +373,15 @@ export function getOrderByHash (host, filter)
         body
     });
 }
+export function getContracts (host)
+{
+    const body = {};
+    body.method = 'loopring_getContracts';
+    body.params = [{}];
+    body.id = id();
+    body.jsonrpc = '2.0';
+    return request(host, {
+        method: 'post',
+        body
+    });
+}