added ci integration

.gitlab-ci.yml

+unittest:
+    image: debian:stretch
+    stage: test
+    script:
+    - apt update
+    - uname -a
+    - apt install -y locales-all git build-essential  make libavformat-dev libavcodec-dev libavfilter-dev libavutil-dev libxml2-dev libcurl4-openssl-dev
+    - make
+    artifacts:
+        paths:
+	- probe
+	- probe-raw
+	- remux thumbnail
+	- transcode
+	- publish_video
+	- simple_live_transcode

requirements.txt

+libavformat-dev
+libavcodec-dev
+libavfilter-dev
+libavutil-dev
+libxml2-dev
+libcurl4-openssl-dev