Added new logo

Author: Groruk

.github/logo.png

@@ -1,6 +1,8 @@
-
-# SourceBans++
-
+<h1 align="center">
+    <a href="https://sbpp.github.io"><img src="https://raw.githubusercontent.com/Groruk/sourcebans-pp/master/.github/logo.png" height="25%" width="25%"/></a>
+    <br/>
+    SourceBans++
+</h1>
 ### [![GitHub release](https://img.shields.io/github/release/sbpp/sourcebans-pp.svg?style=flat-square)](https://github.com/sbpp/sourcebans-pp/releases/tag/1.5.4.7) [![GitHub license](https://img.shields.io/badge/license-GPLv3-blue.svg?style=flat-square)](https://raw.githubusercontent.com/sbpp/sourcebans-pp/v1.x/SOURCEMOD-LICENSE.txt) [![GitHub license](https://img.shields.io/badge/license-CC_BY--NC--SA_3.0-blue.svg?style=flat-square)](https://creativecommons.org/licenses/by-nc-sa/3.0/) [![GitHub forks](https://img.shields.io/github/forks/sbpp/sourcebans-pp.svg?style=flat-square)](https://github.com/sbpp/sourcebans-pp/network) [![GitHub stars](https://img.shields.io/github/stars/sbpp/sourcebans-pp.svg?style=flat-square)](https://github.com/sbpp/sourcebans-pp/stargazers) [![GitHub issues](https://img.shields.io/github/issues/sbpp/sourcebans-pp.svg?style=flat-square)](https://github.com/sbpp/sourcebans-pp/issues) [![Travis](https://img.shields.io/travis/sbpp/sourcebans-pp.svg?style=flat-square)](https://travis-ci.org/sbpp/sourcebans-pp) [![Codacy](https://img.shields.io/codacy/grade/1fc9e40bde8e40dca8680e4b2d51256b.svg?style=flat-square)](https://www.codacy.com/app/sbpp/sourcebans-pp)
 Global admin, ban, and communication management system for the Source engine