Make the README prettier

Author: vHanda

README.md

@@ -1,9 +1,13 @@
-# Dart Git
+<p align="center">
+  <img width="300" height="auto" src="https://raw.githubusercontent.com/GitJournal/dart_git/master/assets/logo.png">
+  <h1>DartGit</h1>
+</p>
 
-![DartGit](https://raw.githubusercontent.com/GitJournal/dart_git/master/assets/logo.png)
+<p align="center">
+  <a href="https://github.com/GitJournal/dart_git/actions"><img alt="Build Status" src="https://github.com/GitJournal/dart_git/workflows/Dart%20CI/badge.svg"/></a>
+  <a href="https://www.gnu.org/licenses/agpl-3.0"><img alt="License: AGPL v3" src="https://img.shields.io/badge/License-AGPL%20v3-blue.svg"></a>
+</p>
 
-[![Build Status](https://github.com/GitJournal/dart_git/workflows/Dart%20CI/badge.svg)](https://github.com/GitJournal/dart_git/actions)
-[![License: AGPL v3](https://img.shields.io/badge/License-AGPL%20v3-blue.svg)](https://www.gnu.org/licenses/agpl-3.0)
 
 This is an experimental reimplementation of Git in pure Dart. The GitJournal project is currently using libgit2, but it's a pain using it - the cross compilation, java ndk bindings + ios bindings. Also, it doesn't let us easily control the FS layer. We eventually want to encrypt the git repo.