build: add url and requirements

Author: kernelshard

setup.py

@@ -9,6 +9,8 @@
     description="Python wrapper for the ImageKit API",
     long_description=long_description,
     long_description_content_type="text/markdown",
+    install_requires=['requests==2.20.1'],
+    url="https://github.com/imagekit-developer/imagekit-python",
     packages=setuptools.find_packages(),
     classifiers=[
         "Programming Language :: Python :: 3",