chore: update README.md to use pip install aiperf (#277)

Signed-off-by: Matthew Kotila <matthew.r.kotila@gmail.com>

Author: matthewkotila

README.md

@@ -57,7 +57,7 @@ INSTALLATION
 
 ## Installation
 ```
-pip install git+https://github.com/ai-dynamo/aiperf.git
+pip install aiperf
 ```
 
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