Small changes related to replacing travis by GH actions (#409)

* (README) replace travis badge by GH actions badge

* (Contributing) replace travis by GH Actions

* (npmignore) remove .travis.yml, add .github

* (actions) also test noetic

.github/workflows/main.yml

@@ -9,7 +9,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ros_distro: [kinetic, melodic]
+        ros_distro: [kinetic, melodic, noetic]
     steps:
       - uses: actions/checkout@v2
       - name: Docker pull

.npmignore

@@ -2,6 +2,6 @@ test
 examples
 Gruntfile.js
 .gitignore
-.travis.yml
+.github
 bower.json
 *.md

CONTRIBUTING.md

@@ -27,7 +27,7 @@ To run the build tasks:
  1. `cd /path/to/roslibjs/`
  2. `grunt build`
 
-`grunt build` will concatenate and minimize the files under src and replace roslib.js and roslib.min.js in the build directory. It will also run the linter and test cases. This is what [Travis CI](https://travis-ci.org/RobotWebTools/roslibjs) runs when a Pull Request is submitted.
+`grunt build` will concatenate and minimize the files under src and replace roslib.js and roslib.min.js in the build directory. It will also run the linter and test cases. This is what [GH Actions](https://github.com/RobotWebTools/roslibjs/actions) runs when a Pull Request is submitted.
 
 `grunt dev` will watch for any changes to any of the src/ files and automatically concatenate and minimize the files. This is ideal for those developing as you should only have to run `grunt dev` once.
 

README.md

@@ -1,5 +1,6 @@
-roslibjs [![Build Status](https://api.travis-ci.org/RobotWebTools/roslibjs.png)](https://travis-ci.org/RobotWebTools/roslibjs)
-========
+# roslibjs
+
+[![CI](https://github.com/RobotWebTools/roslibjs/actions/workflows/main.yml/badge.svg)](https://github.com/RobotWebTools/roslibjs/actions/workflows/main.yml)
 
 #### The Standard ROS JavaScript Library
 For full documentation, see [the ROS wiki](http://wiki.ros.org/roslibjs) or check out some [working demos](http://robotwebtools.org/demos.html).