Update README.md (Lightning-AI#1291)

Co-authored-by: Sebastian Raschka <[email protected]>

README.md

@@ -25,14 +25,24 @@ Uses the latest state-of-the-art techniques:
   <a href="#finetune-an-llm">Finetune, pretrain LLMs</a> •
   <a href="#choose-from-20-llms">Models</a> •
   <a href="#state-of-the-art-features">Features</a> •
-  <a href="#training-recipes">Training recipes (YAML)</a> •
-  <a href="#litgpt-design-principles">Design principles</a>
+  <a href="#training-recipes">Training recipes (YAML)</a>
 </p>
 
 </div>
 
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+## Finetune, pretrain and deploy AI models Lightning fast ⚡⚡
+LitGPT is a command-line tool to use, pretrain, finetune and deploy LLMs. It is based on configs with highly-optimized recipes for training the world's largest, most powerful open-source LLMs.     
+
+We've reimplemented all the model architectures and training recipes for 3 reasons:   
+
+1. Remove all abstraction layers and have single file implementations.
+2. Guarantee Apache 2.0 compliance to enable enterprise use without limits.
+3. Optimized every detail of every model to get the fastest performance possible to lower cost and training speeds.       
+
+&nbsp;
+
 ## Install LitGPT
 
 Install LitGPT with all dependencies (including CLI, quantization, tokenizers for all models, etc.):
@@ -60,8 +70,7 @@ pip install -e '.[all]'
 ---
 
 # Get started
-LitGPT is a command-line tool to use, pretrain, finetune and deploy LLMs.
-
+LitGPT is CLI and config-based. Select the model and the action you want to take on that model (finetune, pretrain, evaluate, deploy, etc...):    
 
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