Merge pull request #61 from wrabit/use_engine_charset

set charset from engine default

django_cotton/cotton_loader.py

@@ -56,7 +56,7 @@ def get_template_from_string(self, template_string):
 
     def _get_template_string(self, template_name):
         try:
-            with open(template_name, "r") as f:
+            with open(template_name, "r", encoding=self.engine.file_charset) as f:
                 return f.read()
         except FileNotFoundError:
             raise TemplateDoesNotExist(template_name)