Docs: add npm badge to README (#114)

bmish · web-flow · commit 36d16dfc1d40 · 2021-05-10T11:32:15.000+08:00
Provides a more convenient way to find out what the latest version is as well as link to the package on the NPM site.
diff --git a/README.md b/README.md
@@ -1,4 +1,4 @@
-# eslint-plugin-eslint-plugin [![Build Status](https://travis-ci.org/not-an-aardvark/eslint-plugin-eslint-plugin.svg?branch=master)](https://travis-ci.org/not-an-aardvark/eslint-plugin-eslint-plugin)
+# eslint-plugin-eslint-plugin [![Build Status](https://travis-ci.org/not-an-aardvark/eslint-plugin-eslint-plugin.svg?branch=master)](https://travis-ci.org/not-an-aardvark/eslint-plugin-eslint-plugin) [![NPM version](https://img.shields.io/npm/v/eslint-plugin-eslint-plugin.svg?style=flat)](https://npmjs.org/package/eslint-plugin-eslint-plugin)
 
 An ESLint plugin for linting ESLint plugins
 

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-# eslint-plugin-eslint-plugin [![Build Status](https://travis-ci.org/not-an-aardvark/eslint-plugin-eslint-plugin.svg?branch=master)](https://travis-ci.org/not-an-aardvark/eslint-plugin-eslint-plugin)`
	`1`	`+# eslint-plugin-eslint-plugin [![Build Status](https://travis-ci.org/not-an-aardvark/eslint-plugin-eslint-plugin.svg?branch=master)](https://travis-ci.org/not-an-aardvark/eslint-plugin-eslint-plugin) [![NPM version](https://img.shields.io/npm/v/eslint-plugin-eslint-plugin.svg?style=flat)](https://npmjs.org/package/eslint-plugin-eslint-plugin)`
`2`	`2`
`3`	`3`	`An ESLint plugin for linting ESLint plugins`
`4`	`4`