Resolve "Saving NN with TF 2.x fails"

Closes #56 (closed)

.gitlab-ci.yml

@@ -38,6 +38,7 @@ build:examples:
   image: python:3.7
   script:
     - pip install -r requirements.txt
+    - pip install .
     - cd examples
     - pip install -r requirements.txt
     - jupyter-nbconvert --ExecutePreprocessor.timeout=300 --execute --to html *.ipynb