Merge pull request #284 from ranocha/remove_Travis_CI

remove Travis CI (since we have GitHub actions)

Author: ranocha

.github/workflows/Documenter.yml

@@ -0,0 +1,24 @@
+name: Documentation
+
+on:
+  push:
+    branches:
+      - master
+    tags: '*'
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: julia-actions/setup-julia@latest
+        with:
+          version: '1.5'
+      - name: Install dependencies
+        run: julia --project=docs/ -e 'using Pkg; Pkg.develop(PackageSpec(path=pwd())); Pkg.instantiate()'
+      - name: Build and deploy
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # For authentication with GitHub Actions token
+          DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }} # For authentication with SSH deploy key
+        run: julia --project=docs/ docs/make.jl

.travis.yml

@@ -2,7 +2,6 @@
 
 [![license](https://img.shields.io/github/license/mashape/apistatus.svg?maxAge=2592000)](https://github.com/JuliaMath/IterativeSolvers.jl/blob/master/LICENSE)
 [![Build Status](https://github.com/JuliaMath/IterativeSolvers.jl/workflows/CI/badge.svg)](https://github.com/JuliaMath/IterativeSolvers.jl/actions)
-[![Build Status on Linux](https://travis-ci.org/JuliaMath/IterativeSolvers.jl.svg?branch=master)](https://travis-ci.org/JuliaMath/IterativeSolvers.jl)
 [![Codecov](http://codecov.io/github/JuliaMath/IterativeSolvers.jl/coverage.svg?branch=master)](http://codecov.io/github/JuliaMath/IterativeSolvers.jl?branch=master)
 [![Coveralls](https://coveralls.io/repos/JuliaMath/IterativeSolvers.jl/badge.svg?branch=master&service=github)](https://coveralls.io/github/JuliaMath/IterativeSolvers.jl?branch=master)