Add the logo to the readme

Author: lovasoa

README.md

@@ -1,4 +1,5 @@
-# SQLite compiled to JavaScript
+# SQLite compiled to JavaScript <img src="https://user-images.githubusercontent.com/552629/76405509-87025300-6388-11ea-86c9-af882abb00bd.png" width="40" height="40" />
+
 [![CI status](https://github.com/sql-js/sql.js/workflows/CI/badge.svg)](https://github.com/sql-js/sql.js/actions)
 [![npm](https://img.shields.io/npm/v/sql.js)](https://www.npmjs.com/package/sql.js)
 [![CDNJS version](https://img.shields.io/cdnjs/v/sql.js.svg)](https://cdnjs.com/libraries/sql.js)