add a couple of badges

Author: monosoul

README.md

@@ -1,5 +1,9 @@
 [![Build Status](https://travis-ci.com/monosoul/git-extended-update-index-plugin.svg?branch=master)](https://travis-ci.com/monosoul/git-extended-update-index-plugin)
 [![codecov](https://codecov.io/gh/monosoul/git-extended-update-index-plugin/branch/master/graph/badge.svg)](https://codecov.io/gh/monosoul/git-extended-update-index-plugin)
+[![JetBrains IntelliJ Plugins](https://img.shields.io/jetbrains/plugin/v/11217)](https://plugins.jetbrains.com/plugin/11217-git-extended-update-index)
+[![JetBrains IntelliJ plugins](https://img.shields.io/jetbrains/plugin/d/11217)](https://plugins.jetbrains.com/plugin/11217-git-extended-update-index)
+![license](https://img.shields.io/github/license/monosoul/git-extended-update-index-plugin.svg)
+
 # Git extended update-index plugin
 IntelliJ IDEA plugin to add the extended support of the `git update-index` command.