Update pypi upload script to use twine.

phase2.py

@@ -1,11 +0,0 @@
-import shutil
-import os
-
-def delete(folder):
-    try:
-        shutil.rmtree(folder)
-    except:
-        pass
-
-delete('dist')
-delete('voussoirkit.egg-info')

pypi_upload.bat

@@ -0,0 +1,4 @@
+py setup.py sdist
+twine upload -r pypi dist\*
+rmdir /s /q dist
+rmdir /s /q voussoirkit.egg-info

voussoirkit.bat

@@ -1,3 +0,0 @@
-rem py setup.py register -r https://upload.pypi.org/legacy/
-py setup.py sdist upload -r https://upload.pypi.org/legacy/
-phase2