Write README and front page of doc (#147)

docs/source/getting_started/installation.rst

@@ -3,17 +3,20 @@
 Installation
 ============
 
-vLLM is a Python library that includes some C++ and CUDA code.
-vLLM can run on systems that meet the following requirements:
+vLLM is a Python library that also contains some C++ and CUDA code.
+This additional code requires compilation on the user's machine.
+
+Requirements
+------------
 
 * OS: Linux
 * Python: 3.8 or higher
 * CUDA: 11.0 -- 11.8
-* GPU: compute capability 7.0 or higher (e.g., V100, T4, RTX20xx, A100, etc.)
+* GPU: compute capability 7.0 or higher (e.g., V100, T4, RTX20xx, A100, L4, etc.)
 
 .. note::
     As of now, vLLM does not support CUDA 12.
-    If you are using Hopper or Lovelace GPUs, please use CUDA 11.8.
+    If you are using Hopper or Lovelace GPUs, please use CUDA 11.8 instead of CUDA 12.
 
 .. tip::
     If you have trouble installing vLLM, we recommend using the NVIDIA PyTorch Docker image.
@@ -45,7 +48,7 @@ You can install vLLM using pip:
 Build from source
 -----------------
 
-You can also build and install vLLM from source.
+You can also build and install vLLM from source:
 
 .. code-block:: console