Add directory check to library download

get-gaze-client.js

@@ -25,6 +25,14 @@ function downloadFile(source, target) {
   });
 }
 
+// Make sure vendors folder exists
+
+if (!fs.existsSync("vendors")){
+    fs.mkdirSync("vendors");
+}
+
+// Download all file
+
 for (let i = 0; i < fileList.length; i++) {
   let file = fileList[i];
   downloadFile(file.url, file.localPath);