Fix CI badge

README.md

@@ -1,6 +1,5 @@
 # ImagineAnalyses
-[![Build Status](https://travis-ci.com/HolyLab/ImagineAnalyses.jl.svg?branch=master)](https://travis-ci.com/HolyLab/ImagineAnalyses.jl)
-[![Build status](https://ci.appveyor.com/api/projects/status/s2bawvt4ahdkl8qj/branch/master?svg=true)](https://ci.appveyor.com/project/Cody-G/imagineanalyses-jl/branch/master)
+[![CI](https://github.com/HolyLab/ImagineAnalyses.jl/actions/workflows/CI.yml/badge.svg)](https://github.com/HolyLab/ImagineAnalyses.jl/actions/workflows/CI.yml)
 [![codecov](https://codecov.io/gh/HolyLab/ImagineAnalyses.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/HolyLab/ImagineAnalyses.jl)
 
 This is a bit of a hodepodge of utilities for analyzing hardware signals recorded by Imagine or Imagine.jl.  These may get reworked or redistributed in the future.