FontFile Fallback documentation and fix

Author: LasseRafn

README.md

@@ -72,7 +72,8 @@ Two fonts are included:
 * /fonts/NotoSans-Medium.otf
 * /fonts/NotoSans-Regular.otf
 
-The method automatically appends __DIR__ to it, so the font will be: ````__DIR__ . '/fonts/OpenSans-Regular.ttf'````
+The method will look for the font, if none found it will append __DIR__ and try again, and if not it will default to the first GD Internal Font.
+If you input an integer between 1 and 5, it will use a GD Internal font as per that number.
 
 ````php
 // will be Semibold

src/InitialAvatar.php

@@ -311,7 +311,7 @@ private function makeAvatar($image)
         }
 
         return $avatar->text($name, $size / 2, $size / 2, function ($font) use ($size, $color, $fontFile, $fontSize) {
-            $font->file(__DIR__.$fontFile);
+            $font->file($fontFile);
             $font->size($size * $fontSize);
             $font->color($color);
             $font->align('center');