Fix 'get_url' is a staticmethod and not a classmethod

Author: issackelly

sc2reader/resources.py

@@ -378,7 +378,7 @@ def __init__(self, map_file, filename=None, gateway=None, map_hash=None, **optio
         self.archive = MPQArchive(StringIO(self.file))
         self.minimap = self.archive.read_file('Minimap.tga')
 
-    @classmethod
+    @staticmethod
     def get_url(gateway, map_hash):
         if gateway and map_hash:
             return Map.url_template.format(gateway, map_hash)
@@ -397,4 +397,4 @@ def read_game_strings(self):
             elif parts[0] == 'DocInfo/Author':
                 self.author = parts[1]
             elif parts[0] == 'DocInfo/DescLong':
-                self.description = parts[1]
+                self.description = parts[1]