minor #2608 Switch from travis-ci to github actions (acrobat)

This PR was merged into the 1.10-dev branch.

Discussion
----------

| Q               | A
| --------------- | ---
| Bug fix?        | no
| New feature?    | no
| BC breaks?      | no
| Related tickets |
| License         | MIT


Commits
-------

47bf50a Switch from travis-ci to github actions

Author: acrobat

.github/workflows/ci.yaml

@@ -0,0 +1,22 @@
+name: CI
+
+on:
+    [push, pull_request]
+
+jobs:
+    test:
+        name: Test
+        runs-on: ubuntu-latest
+
+        steps:
+            - uses: actions/checkout@v2
+            - uses: actions/setup-node@v1
+
+            -   name: Install grunt
+                run: yarn global add grunt-cli
+
+            -   name: Install dependencies
+                run: yarn
+
+            -   name: Run tests
+                run: yarn test