update v2.0 progress

Author: streamtw

README.md

@@ -41,13 +41,14 @@ This approach ensures that only authenticated users have access to the Laravel-F
 * [x] (done) Unit test
 * [x] (done) Integrate with Laravel Storage
 * [x] (done) Multiple selection
-* [ ] Configurable disk of storage
-* [ ] (in progress) Responsive design
-* [ ] (in progress) Config refactoring
+* [x] (done) Responsive design
+* [x] (done) Config refactoring
 * [x] (done) JSON APIs
 * [ ] Move to folder function
-* [ ] Applying MIME icon generator
+* [ ] (in progress) Applying MIME icon generator
+* [ ] (in progress) Configurable disk of storage
 * [x] (done) Bootstrap 4 support
+* [x] (done) Remove bootbox
 
 
 ## Contributors & Credits