Add a favicon.

Also formatted CSS :)

Signed-off-by: Ari Archer <ari@ari.lt>

assets/css/style.css

@@ -1,8 +1,8 @@
 body {
     background-color: #000;
-    margin:0;
+    margin: 0;
     height: 100;
-    overflow-x: hidden
+    overflow-x: hidden;
 }
 
 /* Ascii logo */