chore: Use Codecov action (react-bootstrap#5093)

* chore: Use Codecov action

* fix

* more

* Update README.md

Author: taion

.github/ISSUE_TEMPLATE/bug_report.md

@@ -4,7 +4,6 @@ about: Create a report to help us improve
 title: ''
 labels: ''
 assignees: ''
-
 ---
 
 ## Describe the bug

.github/ISSUE_TEMPLATE/feature_request.md

@@ -4,7 +4,6 @@ about: Suggest an idea for this project
 title: ''
 labels: ''
 assignees: ''
-
 ---
 
 ## Is your feature request related to a problem? Please describe

.github/workflows/ci.yml

@@ -0,0 +1,44 @@
+name: CI
+on:
+  push:
+    branches:
+      - master
+      - bs3-dev
+  pull_request:
+    branches:
+      - master
+      - bs3-dev
+jobs:
+  ci:
+    name: CI
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        browser: [ChromeHeadless, FirefoxHeadless]
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup Node.js environment
+        uses: actions/setup-node@v1
+        with:
+          node-version: 12.x
+      - name: Update Brew (macOS)
+        if: matrix.os == 'macOS-latest'
+        run: brew update
+      - name: Install Chrome (macOS)
+        if: matrix.os == 'macOS-latest' && matrix.browser == 'ChromeHeadless'
+        run: brew cask install google-chrome
+      - name: Install Firefox (macOS)
+        if: matrix.os == 'macOS-latest' && matrix.browser == 'FirefoxHeadless'
+        run: brew cask install firefox
+      - name: Install Dependencies
+        run: yarn bootstrap
+      - name: Run Tests
+        run: yarn test
+        env:
+          BROWSER: ${{ matrix.browser }}
+      - name: Codecov
+        uses: codecov/codecov-action@v1
+      - name: Build Project
+        run: yarn build

.github/workflows/nodejs.yml

@@ -2,7 +2,7 @@
 
 > [Bootstrap 4][bootstrap] components built with [React][react].
 
-[![GitHub Actions Build status][gh-actions-badge]][gh-actions]
+[![GitHub Actions CI status][gh-actions-badge]][gh-actions]
 [![Travis CI Build status][travis-badge]][travis]
 [![npm][npm-badge]][npm]
 [![Codecov][codecov-badge]][codecov]
@@ -64,5 +64,5 @@ Yes please! See the [contributing guidelines][contributing] for details.
 [discord]: https://discord.gg/0ZcbPKXt5bXLs9XK
 [netlify-badge]: https://api.netlify.com/api/v1/badges/91501718-8820-4d69-b7fe-1616eff5914e/deploy-status
 [netlify]: https://app.netlify.com/sites/react-bootstrap/deploys
-[gh-actions-badge]: https://github.com/react-bootstrap/react-bootstrap/workflows/Node%20CI/badge.svg
+[gh-actions-badge]: https://github.com/react-bootstrap/react-bootstrap/workflows/CI/badge.svg
 [gh-actions]: https://github.com/react-bootstrap/react-bootstrap/actions