Cleanup CI (#446)

Remove debug steps from sauce workflow (#443), remove travis, and
replace badges in readme.

.github/workflows/sauce.yml

@@ -17,15 +17,8 @@ jobs:
           SAUCE_CONNECT_DOWNLOAD_ON_INSTALL: true
       - name: Add host
         run: echo "127.0.0.1 airtap.local" | sudo tee -a /etc/hosts
-      - name: Verify Sauce Connect
-        run: ./node_modules/sauce-connect-launcher/sc/sc-4.6.2-linux/bin/sc --doctor || echo Bad
-        env:
-          SAUCE_USERNAME: ${{ secrets.SAUCE_USERNAME }}
-          SAUCE_ACCESS_KEY: ${{ secrets.SAUCE_ACCESS_KEY }}
       - name: Test
         run: npm run test-browsers
         env:
           SAUCE_USERNAME: ${{ secrets.SAUCE_USERNAME }}
           SAUCE_ACCESS_KEY: ${{ secrets.SAUCE_ACCESS_KEY }}
-          DEBUG: airtap*
-          DEBUG_COLORS: true

.npmignore

@@ -6,7 +6,6 @@ zlib.js
 .airtap.yml
 .airtaprc
 .babelrc
-.travis.yml
 .nyc_output
 .github
 coverage

README.md

@@ -1,11 +1,11 @@
 # readable-stream
 
-***Node.js core streams for userland*** [![Build Status](https://travis-ci.com/nodejs/readable-stream.svg?branch=master)](https://travis-ci.com/nodejs/readable-stream)
-
-
-[![NPM](https://nodei.co/npm/readable-stream.png?downloads=true&downloadRank=true)](https://nodei.co/npm/readable-stream/)
-[![NPM](https://nodei.co/npm-dl/readable-stream.png?&months=6&height=3)](https://nodei.co/npm/readable-stream/)
+***Node.js core streams for userland***
 
+[![npm status](http://img.shields.io/npm/v/readable-stream.svg)](https://www.npmjs.org/package/readable-stream)
+[![node](https://img.shields.io/node/v/readable-stream.svg)](https://www.npmjs.org/package/readable-stream)
+![Node.js](https://github.com/nodejs/readable-stream/workflows/Node.js/badge.svg?branch=master)
+![Sauce Labs](https://github.com/nodejs/readable-stream/workflows/Sauce%20Labs/badge.svg?branch=master)
 
 [![Sauce Test Status](https://saucelabs.com/browser-matrix/readabe-stream.svg)](https://saucelabs.com/u/readabe-stream)