Update Readme

Signed-off-by: Daniel Henry <iamdanhenry@gmail.com>

README.md

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+# Dumpy
+
+A simple tool for dumping a directory in a way that an LLM can understand it for adding to the context of a conversation.  By default it recursively dumps from the current directory into the clipboard.
+
+# Installation 
+
+# Usage
+```
+usage: dumpy.py [-h] [--no-gitignore] [--include-git-dir] [--no-clipboard] [--no-stats]
+
+Dumpy: A tool for providing a text representation of a project formatted in a way that LLMs will understand.
+
+options:
+  -h, --help         show this help message and exit
+  --no-gitignore     Ignore the .gitignore file and include all files
+  --include-git-dir  Include the .git directory in the output
+  --no-clipboard     Skip putting content into the clipboard and ouput directly to the console
+  --no-stats         Skip printing stats at the end of the output
+  ```
+  
+# Notes
+- Token estimation is really bad, it's just the number of total characters divided by 4