Fix/install (#45)

* Update package-lock.json

* Update .gitignore

* Add eslint-plugin-react dep. Update yarn.lock

* Upgrade node version

* Update README

Author: danielcaldas

.gitignore

@@ -70,4 +70,4 @@ coverage
 sandbox/rd3g.sandbox.bundle.js.map
 gen-docs
 .DS_Store
-**/.DS_Store
+.vscode/

.travis.yml

@@ -1,6 +1,6 @@
 language: node_js
 node_js:
-    - "6.9.5"
+    - "8.9.0"
 install:
     - yarn install
 script:

README.md

@@ -1,4 +1,4 @@
-# react-d3-graph · [![Build Status](https://travis-ci.org/danielcaldas/react-d3-graph.svg?branch=master)](https://travis-ci.org/danielcaldas/react-d3-graph) [![npm version](https://img.shields.io/badge/npm-v1.0.0-blue.svg)](https://www.npmjs.com/package/react-d3-graph) [![npm stats](https://img.shields.io/badge/downloads-1k-brightgreen.svg)](https://npm-stat.com/charts.html?package=react-d3-graph&from=2017-04-25&to=2017-12-02) [![probot enabled](https://img.shields.io/badge/probot:stale-enabled-yellow.svg)](https://probot.github.io/)
+# react-d3-graph · [![Build Status](https://travis-ci.org/danielcaldas/react-d3-graph.svg?branch=master)](https://travis-ci.org/danielcaldas/react-d3-graph) [![npm version](https://img.shields.io/badge/npm-v1.0.0-blue.svg)](https://www.npmjs.com/package/react-d3-graph) [![npm stats](https://img.shields.io/badge/downloads-1.5k-brightgreen.svg)](https://npm-stat.com/charts.html?package=react-d3-graph&from=2017-04-25&to=2017-12-26) [![probot enabled](https://img.shields.io/badge/probot:stale-enabled-yellow.svg)](https://probot.github.io/)
 :book:  [1.0.0](https://danielcaldas.github.io/react-d3-graph/docs/index.html) | [0.4.0](https://danielcaldas.github.io/react-d3-graph/docs/0.4.0.html) | [0.3.0](https://danielcaldas.github.io/react-d3-graph/docs/0.3.0.html)
 
 ### *Interactive and configurable graphs with react and d3 effortlessly*