chore: use GitHub actions for CI (#30)

* remove Travis CI integration
* use github actions instead

.github/workflows/test.yml

@@ -0,0 +1,27 @@
+on: [push, pull_request]
+name: Test
+jobs:
+  test:
+    strategy:
+      matrix:
+        go-version:
+          - 1.14.x
+        platform:
+          # Would like to test mac & win but not sure how to install opus on
+          # those in GH actions, yet.
+          - ubuntu-latest
+    runs-on: ${{ matrix.platform }}
+    steps:
+    - name: Install Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: ${{ matrix.go-version }}
+    - name: Install system dependencies
+      run: sudo apt-get install pkg-config libopus-dev libopusfile-dev moreutils
+    - name: Checkout code
+      uses: actions/checkout@v2
+    # Could be a separate step but this is so quick--just put it here
+    - name: Lint
+      run: gofmt -d . | tee /dev/stderr | ifne false
+    - name: Test
+      run: go test -race -v ./...

.travis.yml

@@ -1,14 +0,0 @@
-language: go
-
-go: 1.7
-
-dist: trusty
-sudo: required
-
-before_install:
-  - sudo apt-get update
-  - sudo apt-get install pkg-config libopus-dev libopusfile-dev moreutils
-
-script:
-  - gofmt -l . | tee /dev/stderr | ifne false
-  - go test -v ./...