Switch from Travis CI to GitHub Actions

.github/workflows/test.yml

@@ -0,0 +1,29 @@
+on:
+  - push
+  - pull_request
+
+jobs:
+  test:
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby:
+          - ruby-2.1
+          - ruby-2.2
+          - ruby-2.3
+          - ruby-2.4
+          - ruby-2.5
+          - ruby-2.6
+          - ruby-2.7
+          - ruby-3.0
+          - jruby-9.1
+          - jruby-9.2
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
+      - run: ruby --version
+      - run: bundle exec rspec

.travis.yml

@@ -1,18 +0,0 @@
-language: ruby
-cache: bundler
-
-rvm:
-  - 1.9.3
-  - 2.0.0
-  - 2.1.10
-  - 2.2.10
-  - 2.3.8
-  - 2.4.10
-  - 2.5.8
-  - 2.6.6
-  - 2.7.2
-  - 3.0.0
-  - jruby-9.2
-
-script:
-  - bundle exec rspec

README.md

@@ -1,4 +1,4 @@
-# permessage_deflate [![Build status](https://secure.travis-ci.org/faye/permessage-deflate-ruby.svg)](http://travis-ci.org/faye/permessage-deflate-ruby)
+# permessage_deflate
 
 Implements the
 [permessage-deflate](https://tools.ietf.org/html/draft-ietf-hybi-permessage-compression)