Logo with colors changed

Author: davibarreira

README.md

@@ -1,7 +1,7 @@
+<br>
 <a href="https://juliaoptimaltransport.github.io/OptimalTransport.jl/dev">
-<img src="images/optimaltransport_logo.png" height="125"><br></a>
-
-## Optimal transport algorithms for Julia
+<img src="images/optimaltransport_logo.png" height="180"><br></a>
+<br>
 
 [![](https://img.shields.io/badge/docs-stable-blue.svg)](https://JuliaOptimalTransport.github.io/OptimalTransport.jl/stable)
 [![](https://img.shields.io/badge/docs-dev-blue.svg)](https://JuliaOptimalTransport.github.io/OptimalTransport.jl/dev)