Merge pull request #22 from vladdoster/master

Added contribution badge

README.md

@@ -1,3 +1,4 @@
+[![contributions welcome](https://img.shields.io/badge/contributions-welcome-brightgreen.svg?style=flat)](https://github.com/geraldoramos/crypto-bar/issues)
 <a target="_blank" href="https://gitter.im/crypto-bar/Lobby"><img src="https://badges.gitter.im/gitterHQ/gitter.png"></a>
 # <a target="_blank" href="https://www.producthunt.com/posts/crypto-bar"><img src="https://s3.amazonaws.com/cryptobar/phbadge.png" width="35px" height="35px"></img></a> Crypto Bar
 > A menu bar application built using <a href="https://electronjs.org/" target="_blank">Electron</a> and  <a href="https://reactjs.org/" target="_blank">React</a> that updates cryptocurrencies prices in real-time using web sockets. Data provided by [CryptoCompare](https://cryptocompare.com), which compiles information for <a href="https://github.com/geraldoramos/crypto-bar/blob/master/config.json" target="_blank">most</a> cryptocurrencies and exchanges.