[simple-scan] Run CI on Ubuntu 16.04

[Robert Ancell <rancell src gnome org>]

commit de380ef3b62b9588648a01e1b00bd2cbd908d2ae
Author: Robert Ancell <robert ancell canonical com>
Date:   Thu Dec 7 09:59:34 2017 +1300

    Run CI on Ubuntu 16.04

 .gitlab-ci.yml | 13 +++++++++++++
 1 file changed, 13 insertions(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index e69de29..3b578c8 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -0,0 +1,13 @@
+image: ubuntu:16.04
+
+stages:
+ - build
+
+before_script:
+  - apt install meson valac libgtk-3-dev libgusb-dev libcolord-dev libpackagekit-glib2-dev libwebp-dev 
libsane-dev gettext itstool-y gcc meson gettext itstool
+
+build-simple-scan:
+  stage: build
+  script:
+    - meson _build .
+    - ninja -C _build install