Add install with pip (#3)

README.md

@@ -18,9 +18,12 @@ The core features of SGLang include:
 
 ## Install
 
-### Method 1: With Pip
+### Method 1: With pip
+```
+pip install "sglang[all]"
+```
 
-### Method 2: From Source
+### Method 2: From source
 ```
 git clone git@github.com:sgl-project/sglang.git
 cd sglang

python/sglang/__init__.py

+__version__ == "0.1.0"
+
 from sglang.api import *
 from sglang.global_config import global_config

python/upload_pypi.sh

+rm -rf dist
+python3 -m build
+python3 -m twine upload dist/*