Add @maciejmyslinski as a contributor

Author: CompuIves

.all-contributorsrc

@@ -914,6 +914,15 @@
       "contributions": [
         "code"
       ]
+    },
+    {
+      "login": "maciejmyslinski",
+      "name": "Maciej",
+      "avatar_url": "https://avatars0.githubusercontent.com/u/11421186?v=4",
+      "profile": "http://www.maciejmyslinski.com",
+      "contributions": [
+        "code"
+      ]
     }
   ],
   "repoType": "github"