docs(CI): Add for examples (#95)

Author: jcs090218

docs/content/en/Continuous Integration/CircleCI.md

@@ -0,0 +1,47 @@
+---
+title: 💠 CircleCI
+weight: 400
+---
+
+{{< toc >}}
+
+Example to use [Circle CI](https://circleci.com/).
+
+```yml
+# Default actions to perform on each Emacs version
+default: &default-steps
+  steps:
+    - checkout
+    - run: apt-get update && apt-get install -y git
+    - run: |
+        eask install
+        eask compile
+        eask lint package
+
+# Enumerated list of Emacs versions
+jobs:
+  test-emacs-26:
+    docker:
+      - image: silex/emacs:26.2
+        entrypoint: bash
+    <<: *default-steps
+
+  test-emacs-master:
+    docker:
+      - image: silex/emacs:master
+        entrypoint: bash
+    <<: *default-steps
+
+# Executing in parallel
+workflows:
+  version: 2
+  ci-test-matrix:
+    jobs:
+      - test-emacs-26
+      - test-emacs-master
+```
+
+This example is testing your Emacs Lisp package in the below environment;
+
+* Emacs: `26.2` and `snapshot`
+* Eask: `snapshot` (latest)

docs/content/en/Continuous Integration/GitHub Actions.md

@@ -5,7 +5,7 @@ weight: 100
 
 {{< toc >}}
 
-Here is an example using the GitHub Actions service.
+Here is an example using the [GitHub](https://github.com/) Actions service.
 
 ```yml
 jobs:

docs/content/en/Continuous Integration/GitLab Runner.md

@@ -0,0 +1,31 @@
+---
+title: 🦊 GitLab Runner
+weight: 200
+---
+
+{{< toc >}}
+
+Example to use [GitLab](https://gitlab.com/) runner.
+
+```yml
+default:
+  image: node:16
+
+pages:
+  stage: test
+  before_script:
+  - npm install @emacs-eask/cli -g
+  - apt-get update
+  - apt-get install emacs -y
+  script:
+  - eask install
+  - eask compile
+  - eask lint package
+  only:
+  - main
+```
+
+This example is testing your Emacs Lisp package in the below environment;
+
+* Emacs: `snapshot`
+* Eask: `snapshot` (latest)

docs/content/en/Continuous Integration/Travis CI.md

@@ -1,8 +1,36 @@
 ---
 title: 📀 Travis CI
-weight: 200
+weight: 300
 ---
 
 {{< toc >}}
 
-WIP
+Example to use [Travis CI](https://www.travis-ci.com/).
+
+```yml
+language: node_js
+node_js:
+  - 16
+
+env:
+  - EVM_EMACS=emacs-27.2-travis-linux-xenial
+  - EVM_EMACS=emacs-git-snapshot-travis-linux-xenial
+
+matrix:
+  fast_finish: true
+  allow_failures:
+    - env: EVM_EMACS=emacs-git-snapshot-travis-linux-xenial
+
+install:
+  - npm install @emacs-eask/cli -g
+
+script:
+  - eask install
+  - eask compile
+  - eask lint package
+```
+
+This example is testing your Emacs Lisp package in the below environment;
+
+* Emacs: `27.2` and `snapshot`
+* Eask: `snapshot` (latest)