Merge branch 'golang-1.6.2' into 'master'

Use Go 1.6.2



See merge request !46

.gitlab-ci.yml

 before_script:
   - apt-get update -qq && apt-get install -y curl unzip bzip2
-  - curl -O https://storage.googleapis.com/golang/go1.5.3.linux-amd64.tar.gz
-  - echo '43afe0c5017e502630b1aea4d44b8a7f059bf60d7f29dfd58db454d4e4e0ae53  go1.5.3.linux-amd64.tar.gz' | shasum -c -a256 -
-  - rm -rf /usr/local/go && tar -C /usr/local -xzf go1.5.3.linux-amd64.tar.gz
+  - curl -O https://storage.googleapis.com/golang/go1.6.2.linux-amd64.tar.gz
+  - echo 'e40c36ae71756198478624ed1bb4ce17597b3c19d243f3f0899bb5740d56212a  go1.6.2.linux-amd64.tar.gz' | shasum -c -a256 -
+  - rm -rf /usr/local/go && tar -C /usr/local -xzf go1.6.2.linux-amd64.tar.gz
   - export PATH=/usr/local/go/bin:$PATH
 
 test: