Update README

Author: develop

README.md

@@ -165,7 +165,10 @@ EDITORJS_DEFAULT_CONFIG_TOOLS = {
     'Image': {
         'class': 'ImageTool',
         'inlineToolbar': True,
-        "config": {"endpoints": {"byFile": reverse_lazy('editorjs_image_upload')}},
+        "config": {"endpoints": {
+                "byFile": reverse_lazy('editorjs_image_upload'),
+                "byUrl": reverse_lazy('editorjs_image_by_url')
+            }},
     },
     'Header': {
         'class': 'Header',