[CI] add .gitlab-ci.yml & badges

.gitlab-ci.yml

+variables:
+  GIT_SUBMODULE_STRATEGY: "recursive"
+  GIT_DEPTH: "3"
+  CCACHE_BASEDIR: "${CI_PROJECT_DIR}"
+  CCACHE_DIR: "${CI_PROJECT_DIR}/ccache"
+
+cache:
+  paths:
+    - ccache
+
+.robotpkg-hpp-statistics: &robotpkg-hpp-statistics
+  except:
+    - gh-pages
+  script:
+    - mkdir -p ccache
+    - cd /root/robotpkg/path/hpp-statistics
+    - git pull
+    - make checkout MASTER_REPOSITORY="dir ${CI_PROJECT_DIR}"
+    - make install
+    - cd work.$(hostname)/$(make show-var VARNAME=DISTNAME)
+    - make test
+
+robotpkg-hpp-statistics-14.04-release:
+  <<: *robotpkg-hpp-statistics
+  image: eur0c.laas.fr:5000/humanoid-path-planner/hpp-statistics/hpp-statistics:14.04
+
+robotpkg-hpp-statistics-16.04-release:
+  <<: *robotpkg-hpp-statistics
+  image: eur0c.laas.fr:5000/humanoid-path-planner/hpp-statistics/hpp-statistics:16.04
+
+robotpkg-hpp-statistics-18.04-release:
+  <<: *robotpkg-hpp-statistics
+  image: eur0c.laas.fr:5000/humanoid-path-planner/hpp-statistics/hpp-statistics:18.04
+
+doc-coverage:
+  <<: *robotpkg-hpp-statistics
+  image: eur0c.laas.fr:5000/humanoid-path-planner/hpp-statistics/hpp-statistics:16.04
+  before_script:
+    - echo -e 'CXXFLAGS+= --coverage\nLDFLAGS+= --coverage\nPKG_DEFAULT_OPTIONS= debug' >> /opt/openrobots/etc/robotpkg.conf
+  after_script:
+    - cd /root/robotpkg/path/hpp-statistics
+    - cd work.$(hostname)/$(make show-var VARNAME=DISTNAME)
+    - make doc
+    - mv doc/doxygen-html ${CI_PROJECT_DIR}
+    - mkdir -p ${CI_PROJECT_DIR}/coverage/
+    - gcovr -r .
+    - gcovr -r . --html --html-details -o ${CI_PROJECT_DIR}/coverage/index.html
+  artifacts:
+    expire_in: 1 day
+    paths:
+      - doxygen-html/
+      - coverage/
+

README.md

 # hpp-statistics
 
-[![Build Status](https://travis-ci.org/humanoid-path-planner/hpp-statistics.svg?branch=master)](https://travis-ci.org/humanoid-path-planner/hpp-statistics)
+[![Building Status](https://travis-ci.org/humanoid-path-planner/hpp-statistics.svg?branch=master)](https://travis-ci.org/humanoid-path-planner/hpp-statistics)
+[![Pipeline status](https://gepgitlab.laas.fr/humanoid-path-planner/hpp-statistics/badges/master/pipeline.svg)](https://gepgitlab.laas.fr/humanoid-path-planner/hpp-statistics/commits/master)
+[![Coverage report](https://gepgitlab.laas.fr/humanoid-path-planner/hpp-statistics/badges/master/coverage.svg?job=doc-coverage)](http://projects.laas.fr/gepetto/doc/humanoid-path-planner/hpp-statistics/master/coverage/)
 
 This package is part of the [HPP] software and provides a few tools for basic statistics.
 

cmake @ 7cdd2146

-Subproject commit d22de8c53c3507df785b1fb3ab260d9fdfb65233
+Subproject commit 7cdd2146508a3431adb8e5a0d4233704080299cd