CI: add travis test description

.travis.yml

@@ -0,0 +1,23 @@
+---
+addons:
+  apt:
+    packages:
+      - codespell
+      - make
+      - perl
+      - shellcheck
+notifications:
+  email: false
+  irc:
+    on_success: change
+    on_failure: always
+    channels:
+      - "irc.oftc.net#munin"
+    template:
+      - "%{repository} (%{branch} - %{commit} : %{author}): %{message}"
+      - "Build details: %{build_url}"
+
+script:
+  - make lint
+  - make spelling
+  - make test