Merge pull request #16 from uw-it-aca/feature/github-actions

updates readme

README.md

@@ -1,3 +1,8 @@
 # Grade Conversion Calculator
 
-Client-side tool for converting a percentage-based grading scale to a points-based scale.
+[![Build Status](https://github.com/uw-it-aca/grade-conversion-calculator/workflows/tests/badge.svg?branch=master)](https://github.com/uw-it-aca/grade-conversion-calculator/actions)
+[![Coverage Status](https://coveralls.io/repos/github/uw-it-aca/grade-conversion-calculator/badge.svg?branch=master)](https://coveralls.io/github/uw-it-aca/grade-conversion-calculator?branch=master)
+[![PyPi Version](https://img.shields.io/pypi/v/grade-conversion-calculator.svg)](https://pypi.python.org/pypi/grade-conversion-calculator)
+![Python versions](https://img.shields.io/pypi/pyversions/grade-conversion-calculator.svg)
+
+Client-side app for converting a percentage-based grading scale to a points-based scale.