Merge pull request #1004 from pybamm-team/remove-travis

Remove travis

README.md

@@ -1,7 +1,6 @@
 # PyBaMM
 
-[![travis](https://travis-ci.org/pybamm-team/PyBaMM.svg?branch=master)](https://travis-ci.org/pybamm-team/PyBaMM)
-[![Build status](https://ci.appveyor.com/api/projects/status/xdje8jnhuj0ye1jc/branch/master?svg=true)](https://ci.appveyor.com/project/martinjrobins/pybamm/branch/master)
+[![Build](https://github.com/pybamm-team/PyBaMM/workflows/PyBaMM/badge.svg)](https://github.com/pybamm-team/PyBaMM/actions?query=workflow%3APyBaMM+branch%3Adevelop)
 [![readthedocs](https://readthedocs.org/projects/pybamm/badge/?version=latest)](https://pybamm.readthedocs.io/en/latest/?badge=latest)
 [![codecov](https://codecov.io/gh/pybamm-team/PyBaMM/branch/master/graph/badge.svg)](https://codecov.io/gh/pybamm-team/PyBaMM)
 [![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/pybamm-team/PyBaMM/master?filepath=examples%2Fnotebooks)
@@ -43,9 +42,9 @@ For new users we recommend the [Getting Started](examples/notebooks/Getting%20St
 
 Further details can be found in a number of [detailed examples](examples/notebooks/README.md), hosted here on
 github. In addition, there is a [full API documentation](http://pybamm.readthedocs.io/),
-hosted on [Read The Docs](readthedocs.io). A set of slides giving an overview of PyBaMM
-can be found
-[here](https://github.com/pybamm-team/pybamm_summary_slides/blob/master/pybamm.pdf).
+hosted on [Read The Docs](readthedocs.io). 
+Additional supporting material can be found
+[here](https://github.com/pybamm-team/pybamm-supporting-material/).
 
 For further examples, see the list of repositories that use PyBaMM [here](https://github.com/pybamm-team/pybamm-example-results)