add jscs+eslint info [skip ci]

Author: hzoo

README.md

@@ -1,3 +1,9 @@
+## JSCS has merged with ESLint!
+
+Check out the [`JSCS Compatibility`](https://github.com/eslint/eslint/milestones/JSCS%20Compatibility) milestone to track our progress on making it easy to transition to ESLint.
+
+[JSCS' post](https://medium.com/@markelog/jscs-end-of-the-line-bc9bf0b3fdb2#.x0o1xqkk9) and [ESLint's post](http://eslint.org/blog/2016/04/welcoming-jscs-to-eslint).
+
 [![NPM Version](https://img.shields.io/npm/v/jscs.svg?style=flat)](https://www.npmjs.com/package/jscs)
 [![Build Status](https://travis-ci.org/jscs-dev/node-jscs.svg?branch=master)](https://travis-ci.org/jscs-dev/node-jscs)
 [![Coverage Status](https://img.shields.io/coveralls/jscs-dev/node-jscs.svg?style=flat)](https://coveralls.io/r/jscs-dev/node-jscs?branch=master)