travis to arduino-ci

.arduino-ci.yaml

@@ -0,0 +1,4 @@
+only_boards:
+  - arduino:avr:leonardo
+library_archives:
+  - LSM6=https://github.com/pololu/lsm6-arduino/archive/1.0.0.tar.gz=046cw10nv6cr8624f6j2rw5kf5cazrb9n8sda92m0n2971zc3k48

.github/workflows/ci.yaml

@@ -0,0 +1,19 @@
+name: "CI"
+on:
+  pull_request:
+  push:
+jobs:
+  ci:
+    runs-on: ubuntu-20.04
+    steps:
+    - name: Checkout this repository
+      uses: actions/[email protected]
+    - name: Cache for arduino-ci
+      uses: actions/[email protected]
+      with:
+        path: |
+          ~/.arduino15
+        key: ${{ runner.os }}-arduino
+    - name: Install nix
+      uses: cachix/install-nix-action@v12
+    - run: nix-shell -I nixpkgs=channel:nixpkgs-unstable -p arduino-ci --run "arduino-ci"

.gitignore

@@ -1 +1,2 @@
-docs
+/docs/
+/out/

.gitlab-ci.yml

@@ -0,0 +1,11 @@
+image: $CI_REGISTRY_IMAGE/nixos/nix:2.3.6
+
+stages:
+  - ci
+
+ci:
+  stage: ci
+  tags:
+    - nix
+  script:
+    - nix-shell -I nixpkgs=channel:nixpkgs-unstable -p arduino-ci --run "arduino-ci"

README.md

@@ -2,7 +2,6 @@
 
 Version: 1.0.2<br/>
 Release date: 2017-07-17<br/>
-[![Build Status](https://travis-ci.org/pololu/romi-32u4-arduino-library.svg?branch=master)](https://travis-ci.org/pololu/romi-32u4-arduino-library)<br/>
 [www.pololu.com](https://www.pololu.com/)
 
 ## Summary