Add sage and bedrock example, add cache to examples

examples/bedrock.yml

@@ -0,0 +1,30 @@
+# GitHub Action for roots/bedrock
+name: Testing Bedrock
+on: [push, pull_request]
+jobs:
+  bedrock:
+    name: Bedrock (PHP ${{ matrix.php-versions }})
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        php-versions: ['7.1', '7.2', '7.3', '7.4']
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Setup PHP, with composer and extensions
+        uses: shivammathur/setup-php@master #https://github.com/shivammathur/setup-php
+        with:
+          php-version: ${{ matrix.php-versions }}
+      - name: Get composer cache directory
+        id: composer-cache
+        run: echo "::set-output name=dir::$(composer config cache-files-dir)"
+      - uses: actions/cache@v1
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: ${{ runner.os }}-composer-
+      - name: Install Composer dependencies
+        run: composer install -n --prefer-dist
+      - name: PHP test
+        run: composer test