Update README.md

Author: anaiel

README.md

@@ -22,14 +22,19 @@ exit: ESC / red cross
 ## Examples
 
 <img src="https://github.com/anaiel/fractol/blob/master/fractals/Mandelbrot.png?raw=true" alt="Mandelbrot" width="300"/>
+
 ```
 ./fractol mandelbrot
 ```
+
 <img src="https://github.com/anaiel/fractol/blob/master/fractals/Julia.png?raw=true" alt="Julia" width="300"/>
+
 ```
 ./fractol julia
 ```
+
 <img src="https://raw.githubusercontent.com/anaiel/fractol/master/fractals/Burning%20ship.png" alt="Burning ship" width="300"/>
+
 ```
 ./fractol "burning ship"
 ```