Use pyup or remove its badge from README.rst

[s-weigand]

At the moment a broken pyup badge is in the README.rst, which is a not too pretty artifact from the coociecutter template. The solution for this would to eigther drop the badge or start using pyup.

Pros and Cons on using pyup:
Pros:

• pyup makes automated PRs when new versions of dependencies are released (automated testing due to the CIs, which garantees functionality new versions of dependencies)

Cons:

• can be "spammy" if many updates of dependencies are released
• will lead to merge conficts, with its own PRs, if ignored too long

PS.: Pyup only triggers on fixed versions (i.e.: pytest==3.0.5) not on minimum requirements (i.e.: pytest>=3.0.5), so by convention this should only affect requirements_dev.txt since it is bad practice to fix versions in the setup.py

[s-weigand]

This should be decided on before #10 so the broken badge won't be shown on PyPi.

[oz123]

Can you make a PR for this?

[s-weigand]

Sure, you just need to register the project at pyup and I will make a PR with fixed versions in the requirements_dev.txt

[oz123]

done.