change package name to devgen-cli for pypi compatiable

setup.py

@@ -5,7 +5,7 @@ Setup script for devgen package.
 from setuptools import find_packages, setup
 
 setup(
-    name="devgen",
+    name="devgen-setup",
     version="0.2.0",
     packages=find_packages(),
     include_package_data=True,