Added gitlab ci configuration

.gitlab-ci.yml

+#
+# This ci script builds the python package and pushes a release
+# to the python package index (pypi).
+# It is triggered upon the creation of a tag with name vX.X.X where
+# X is a number in [0, 9].
+# For the deployment to pypi the token 'PYPI_TOKEN' is required
+# to be present in the repository.
+#
+
+stages:
+    - release
+
+release:
+    tags:
+        - "runner:docker"
+    image: python:latest
+    stage: release
+    before_script:
+        - python -V
+    script:
+        - pip install wheel
+        - pip install twine
+        - python setup.py sdist bdist_wheel
+        - TWINE_PASSWORD=${PYPI_TOKEN} TWINE_USERNAME=__token__
+            python -m twine upload --repository pypi dist/*
+    only:
+        variables:
+            - $CI_COMMIT_TAG =~ /v[0-9]*\.[0-9]*\.[0-9]*/