Add GitHub Action test

* Create nodejs.yml

* chore: user npm ci, remove npm run build

* chore: remove .travis.yml

* chore: test on 13.x

* Revert "chore: test on 13.x"

This reverts commit 8cc418698b9bbaf175861ef910cb1022d619625e.

* Simplify config

* Rename workflow to test, as it… tests
Co-authored-by: Vadim Makeev <pepelsbey@gmail.com>

.github/workflows/test.yml

+name: Test
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [12.x]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: ${{ matrix.node-version }}
+      - run: npm ci
+      - run: npm test

.travis.yml

-language: node_js
-node_js:
-  - "8"