added changes

Author: dubesar

lib/tunnel.js

@@ -19,10 +19,7 @@ var childProcess = require('child_process'),
 
 var axios = require('axios');
 
-var curr_ver; 
-axios.get('https://registry.npmjs.com/-/v1/search?text=@lambdatest/node-tunnel').then(res => {
-  curr_ver = res.data.objects[0].package.version
-})
+var curr_ver;
 /**
  * Tunnel is a function based Class.
  */
@@ -53,10 +50,13 @@ function Tunnel() {
           return reject({ message: 'user and key is required' });
         }
         // Configure logger
-        Config_(options, function(error, response) {
+        Config_(options, async function(error, response) {
           if (error) {
             throw new Error(error);
           }
+          await axios.get('https://registry.npmjs.com/-/v1/search?text=@lambdatest/node-tunnel').then(res => {
+            curr_ver = res.data.objects[0].package.version
+          })
           if (response.jsonResponse.supportedVersions.indexOf(packageVersion) === -1) {
             throw new Error(
               "\nIt's seems you have unsupported version of " +
@@ -123,10 +123,13 @@ function Tunnel() {
     }
 
     // Configure looger
-    Config_(options, function(error, response) {
+    Config_(options, async function(error, response) {
       if (error) {
         throw new Error(error);
       }
+      await axios.get('https://registry.npmjs.com/-/v1/search?text=@lambdatest/node-tunnel').then(res => {
+        curr_ver = res.data.objects[0].package.version
+      })
       if (response.jsonResponse.supportedVersions.indexOf(packageVersion) === -1) {
         throw new Error(
           "\nIt's seems you have unsupported version of " +