Replace travisCI build badge with github actions (#300)

* replace travisCI build badge with github actions

* add package requirements to docs config becuase they are needed to build docs pages

.readthedocs.yaml

@@ -19,6 +19,7 @@ build:
 # See https://docs.readthedocs.io/en/stable/guides/reproducible-builds.html
 python:
   install:
+    - requirements: requirements.txt
     - requirements: docs/requirements.txt
 
 # Build documentation in the "docs/" directory with Sphinx

README.md

@@ -2,7 +2,7 @@
 
 ![PyPI - Downloads](https://img.shields.io/pypi/dm/impedance?style=flat-square)  [![All Contributors](https://img.shields.io/badge/all_contributors-11-orange.svg?style=flat-square)](#contributors)
 
-[![Build Status](https://travis-ci.org/ECSHackWeek/impedance.py.svg?branch=master&kill_cache=1)](https://travis-ci.org/ECSHackWeek/impedance.py)  [![Documentation Status](https://readthedocs.org/projects/impedancepy/badge/?version=latest&kill_cache=1)](https://impedancepy.readthedocs.io/en/latest/?badge=latest) [![Coverage Status](https://coveralls.io/repos/github/ECSHackWeek/impedance.py/badge.svg?branch=master&kill_cache=1)](https://coveralls.io/github/ECSHackWeek/impedance.py?branch=master)
+[![Build Status](https://github.com/ECSHackWeek/impedance.py/actions/workflows/ci.yml/badge.svg)](https://github.com/ECSHackWeek/impedance.py/actions)  [![Documentation Status](https://readthedocs.org/projects/impedancepy/badge/?version=latest&kill_cache=1)](https://impedancepy.readthedocs.io/en/latest/?badge=latest) [![Coverage Status](https://coveralls.io/repos/github/ECSHackWeek/impedance.py/badge.svg?branch=master&kill_cache=1)](https://coveralls.io/github/ECSHackWeek/impedance.py?branch=master)
 
 impedance.py
 ------------