Add travis tests

.travis.yml

@@ -0,0 +1,27 @@
+# No language: we download vim and compile it oursselves
+language: generic
+
+cache:
+  # Enable cache folder
+  bundler: true
+  directories:
+    - $HOME/docker_images
+
+before_cache:
+  # Save tagged docker images. Info at https://github.com/travis-ci/travis-ci/issues/5358#issuecomment-248915326
+  - >
+    mkdir -p $HOME/docker_images && docker images -a --filter='dangling=false' --format '{{.Repository}}:{{.Tag}} {{.ID}}'
+    | xargs -n 2 -t sh -c 'test -e $HOME/docker_images/$1.tar.gz || docker save $0 | gzip -2 > $HOME/docker_images/$1.tar.gz'
+
+before_install:
+  # Install docker
+  - n_image=$(ls -1 $HOME/docker_images/*.tar.gz | wc -l)
+  - if (( $n_image )); then ls $HOME/docker_images/*.tar.gz | xargs -I {file} sh -c "zcat {file} | docker load";
+    else docker build --tag vimwiki .;
+    fi
+
+script:
+  # Run All tests
+  - pushd test
+  - bash run_tests.sh
+  - popd