Merge pull request #237 from CasperWA/add_dependabot_badge

Add dependabot and last commit date badges

README.md

@@ -2,7 +2,7 @@
 
 | Latest release | Build status | Activity |
 |:--------------:|:------------:|:--------:|
-| [![PyPI Version](https://img.shields.io/pypi/v/optimade?logo=pypi)](https://pypi.org/project/optimade/)<br>[![PyPI - Python Version](https://img.shields.io/pypi/pyversions/optimade?logo=python)](https://pypi.org/project/optimade/)<br>[![OPTIMADE](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/Materials-Consortia/optimade-python-tools/master/.ci/optimade-version.json&logo=json)](https://github.com/Materials-Consortia/OPTIMADE/) | [![Build Status](https://img.shields.io/github/workflow/status/Materials-Consortia/optimade-python-tools/Testing,%20linting,%20and%20OpenAPI%20validation?logo=github)](https://github.com/Materials-Consortia/optimade-python-tools/actions?query=branch%3Amaster+)<br>[![codecov](https://codecov.io/gh/Materials-Consortia/optimade-python-tools/branch/master/graph/badge.svg)](https://codecov.io/gh/Materials-Consortia/optimade-python-tools)<br>[![Heroku](https://heroku-badge.herokuapp.com/?app=optimade&root=v0/info)](https://optimade.herokuapp.com/v0/info) | [![Commit Activity](https://img.shields.io/github/commit-activity/m/Materials-Consortia/optimade-python-tools?logo=github)](https://github.com/Materials-Consortia/optimade-python-tools/pulse) |
+| [![PyPI Version](https://img.shields.io/pypi/v/optimade?logo=pypi)](https://pypi.org/project/optimade/)<br>[![PyPI - Python Version](https://img.shields.io/pypi/pyversions/optimade?logo=python)](https://pypi.org/project/optimade/)<br>[![OPTIMADE](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/Materials-Consortia/optimade-python-tools/master/.ci/optimade-version.json&logo=json)](https://github.com/Materials-Consortia/OPTIMADE/) | [![Build Status](https://img.shields.io/github/workflow/status/Materials-Consortia/optimade-python-tools/Testing,%20linting,%20and%20OpenAPI%20validation?logo=github)](https://github.com/Materials-Consortia/optimade-python-tools/actions?query=branch%3Amaster+)<br>[![codecov](https://codecov.io/gh/Materials-Consortia/optimade-python-tools/branch/master/graph/badge.svg)](https://codecov.io/gh/Materials-Consortia/optimade-python-tools)<br>[![Heroku](https://heroku-badge.herokuapp.com/?app=optimade&root=v0/info&svg=1)](https://optimade.herokuapp.com/v0/info) | [![Commit Activity](https://img.shields.io/github/commit-activity/m/Materials-Consortia/optimade-python-tools?logo=github)](https://github.com/Materials-Consortia/optimade-python-tools/pulse)<br>[![Last Commit](https://img.shields.io/github/last-commit/Materials-Consortia/optimade-python-tools/master?logo=github)](https://github.com/Materials-Consortia/optimade-python-tools/commits/master)<br>[![Dependabot](https://badgen.net/dependabot/Materials-Consortia/optimade-python-tools/?icon=dependabot)](https://dependabot.com) |
 
 The aim of OPTIMADE is to develop a common API, compliant with the [JSON API 1.0](http://jsonapi.org/format/1.0/) specification.
 This is to enable interoperability among databases that contain calculated properties of existing and hypothetical materials.