docs: add version badge

README.md

@@ -1,5 +1,7 @@
 # vimch
 
+![v](https://img.shields.io/badge/version-0.0.3-green)
+
 vimch - Vim Bindings for Chromium. This is a fork of [cVim](https://github.com/1995eaton/chromium-vim) (discontinued) and [vb4c](https://github.com/dcchambers/vb4c) (archived).
 
 # Install
@@ -503,6 +505,11 @@ let completionengines = ['google', 'google-image', 'youtube'] " Show only these
 5. Click on "Load Unpacked Extension..."
 6. Select the vb4c directory.
 
+# Roadmap
+
+- Implement tab splitting keybindings for Vivaldi
+- Modernize codebase with ES6 (long term)
+
 # History
 
 This is a fork of Jake Eaton's