Adding MIME decoder

Author: danny-gallagher

src/main/java/com/mastercard/developer/utils/EncodingUtils.java

@@ -50,11 +50,14 @@ public static byte[] base64Decode(String value) {
         if (null == value) {
             throw new IllegalArgumentException("Can't base64 decode a null value!");
         }
-        value = value.replaceAll("\n", "");
         try {
             return Base64.getDecoder().decode(value);
         } catch (Exception ex) {
-            return Base64.getUrlDecoder().decode(value);
+            try {
+                return Base64.getUrlDecoder().decode(value);
+            } catch (Exception e) {
+                return Base64.getMimeDecoder().decode(value);
+            }
         }
     }