Add more JSON to readme

README.md

@@ -134,10 +134,27 @@ A secure API key can be generated by any password generator.
     files associated with the query.
     - `?file=asdf.png` purge by filename
     - `?alias=asdf.png` purge by alias
+
+    This endpoint returns the following JSON
+    ```json
+    {
+        "msg": "ok",
+        "aliases": ["asdf.png"]
+    }
+    ```
 - `GET /internal/aliases?...` Get the aliases for a file by it's filename or alias
     - `?file={filename}` get aliases by filename
     - `?alias={alias}` get aliases by alias
+
+    This endpiont returns the same JSON as the purge endpoint
 - `GET /internal/filename?alias={alias}` Get the filename for a file by it's alias
+    This endpoint returns the following JSON
+    ```json
+    {
+        "msg": "ok",
+        "filename": "asdf.png"
+    }
+    ```
 
 
 ## Contributing