sorts pull parameters, update documentation link of readme

Author: Insmael

README.md

@@ -11,8 +11,7 @@ npm install cryptomarket
 ```
 # Documentation
 
-[The api documentation](https://api.exchange.cryptomkt.com)
-
+This sdk makes use of the [api version 2](https://api.exchange.cryptomkt.com/v2) of cryptomarket.
 
 # Quick Start
 

lib/client.js

@@ -39,7 +39,9 @@ class Client {
 
     async makeRequest(method, endpoint, params, publc=false) {
         let url = new URL(apiUrl + apiVersion + endpoint)
-        let query = new URLSearchParams(params).toString()
+        let rawQuery = new URLSearchParams(params)
+        rawQuery.sort()
+        let query = rawQuery.toString()
 
         // build fetch options
         let opts = {
@@ -53,7 +55,7 @@ class Client {
         if (!publc) opts.headers['Authorization'] = this.buildCredential(method, endpoint, query)
 
         // include query params to call
-        if (method === methodGet) url.search = query
+        if (method === methodGet || method === methodPut) url.search = query
         else opts.body = query
 
         // make request
@@ -79,7 +81,7 @@ class Client {
         let timestamp = Math.floor(Date.now() / 1000).toString()
         let msg = httpMethod + timestamp + apiVersion + method
         if (query) {
-            if (httpMethod === methodGet) msg += "?"
+            if (httpMethod === methodGet || httpMethod === methodPut) msg += "?"
             msg += query
         } 
         let signature = CryptoJS.HmacSHA256(msg, this.apiSecret).toString()