Update README.md

README.md

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 # Expload  
 ![image](https://github.com/user-attachments/assets/fbae4274-21d0-4233-9c96-5e19bab88488)
+
+## what is expload
+A tool for injecting magic bytes of allowed files, and spoofing the mime type. In order to exploit vulnerable file upload forms that use these as the sole validation mechanism
+
+## useage
+```
+expload.py [-h] -u URL -p PAYLOAD -e EXT -n NAME -f FILENAME
+
+expload args
+
+options:
+  -h, --help            show this help message and exit
+  -u URL, --url URL     url to upload to
+  -p PAYLOAD, --payload PAYLOAD
+                        path to file to upload
+  -e EXT, --ext EXT     extension to spoof
+  -n NAME, --name NAME  field name for file upload
+  -f FILENAME, --filename FILENAME
+                        file name to upload with
+```