Merge pull request #301 from tscheypidi/develop

replaced TravisCI with GitHubActions

.github/.gitignore

+*.html

.github/workflows/test-code.yaml

+on:
+  push:
+    branches:
+      - main
+      - master
+      - develop
+  pull_request:
+    branches:
+      - main
+      - master
+      - develop
+        
+name: check
+
+jobs:
+  check:
+    runs-on: ubuntu-20.04
+    env:
+      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+    steps:
+      - uses: actions/checkout@v2
+
+      - uses: r-lib/actions/setup-r@v1
+
+      - name: Query dependencies
+        run: |
+          saveRDS("gms", ".github/depends.Rds", version = 2)
+          writeLines(sprintf("R-%i.%i", getRversion()$major, getRversion()$minor), ".github/R-version")
+        shell: Rscript {0}
+
+      - name: Cache R packages
+        uses: actions/cache@v2
+        with:
+          path: ${{ env.R_LIBS_USER }}
+          key: ${{ runner.os }}-${{ hashFiles('.github/R-version') }}-1-${{ hashFiles('.github/depends.Rds') }}
+          restore-keys: ${{ runner.os }}-${{ hashFiles('.github/R-version') }}-1-
+
+      - name: Install R dependencies
+        run: |
+          repos <- c("https://cloud.r-project.org","https://rse.pik-potsdam.de/r/packages/")
+          install.packages(c("remotes"), repos=repos)
+          remotes::install_cran("gms", repos=repos)
+        shell: Rscript {0}
+        
+      - name: codeCheck
+        run: null <- gms::codeCheck(strict=TRUE)
+        shell: Rscript {0}
+        

.travis.yml

-# R for travis: see documentation at https://docs.travis-ci.com/user/languages/r
-
-language: r
-os: linux
-dist: xenial
-repos:
-  CRAN: https://cloud.r-project.org
-  PIK:  https://rse.pik-potsdam.de/r/packages/
-cache: packages
-latex: false
-pandoc: false
-r_packages:
-  - gms
-install:
-  - Rscript -e "if(!requireNamespace('gms')) install.packages('gms')"
-script:
-  - Rscript -e "null <- gms::codeCheck(strict=TRUE)"

README.md

 # REMIND - REgional Model of INvestments and Development
 
+[![CodeCheck Status](https://github.com/remindmodel/remind/workflows/check/badge.svg)](https://github.com/remindmodel/remind/actions) 
+
   <https://www.pik-potsdam.de/research/transformation-pathways/models/remind>
 
 ## WHAT IS REMIND?