Update README.md

Author: cnpryer

README.md

@@ -26,22 +26,20 @@ The goal is to create an opinionated tool to support a reliably inviting onboard
 
 - [Installation](#installation)
 - [Usage](#usage)
-- [Documentation](#documentation)
 - [Goals and Motivation](#goals)
 - [Contributing](#contributing)
 
 ## Installation
 
-```
-pip install huak
-```
 
 To install Huak from source using Cargo:
 
 ```
 cargo install --git https://github.com/cnpryer/huak.git huak
 ```
 
+> ⚠️ WARNING: The PyPI distribution is outdated.
+
 ## Usage
 
 ```console
@@ -78,11 +76,6 @@ Options:
   -V, --version   Print version
 ```
 
-## Documentation
-
-- [User Guide](https://cnpryer.github.io/huak/user_guide/)
-- [Development](/docs/development.md)
-
 ## Goals
 
 ### 1. Just use `huak` ✨