root/pypi: links for small-webrtc-prebuilt

root/pypi small_webrtc_prebuilt-0.3.0.tar.gz
root/pypi small_webrtc_prebuilt-0.2.0.tar.gz
root/pypi small_webrtc_prebuilt-0.1.0.tar.gz
root/pypi small_webrtc_prebuilt-0.0.2.tar.gz