added led.sh and gitlab-ci shellcheck

.gitlab-ci.yml

@@ -0,0 +1,16 @@
+# image: scorpil/rust:stable
+
+stages:
+  - test
+
+shellcheck:
+  stage: test
+  image: ubuntu:yakkety
+  before_script:
+    - apt-get update && apt-get install -y shellcheck
+    - locale-gen en_US.UTF-8
+    - export LANG=en_US.UTF-8
+    - export LANGUAGE=en_US:en
+    - export LC_ALL=en_US.UTF-8
+  script:
+    - find . -type f -name '*.sh' -print0 | xargs -n 1 -0 shellcheck --color