language: ruby
before_install:
- sudo apt-get update -qq
- sudo apt-get install -qq libgsl0ldbl libgsl0-dev
rvm:
- 2.2.3
script: 
- bundle exec jekyll build
- bundle exec htmlproof --disable-external ./_site
notifications:
  slack:
    secure: JKGFMgZK8d97NbArV2cXUYP3LcHXk1MnTyd9QdVknMsFpmWhbthUr+seU9cpg0eSw2lGR406GyMsEawy44kKBF6Xw2ufOQq3T5vxMyhV7xGK2Am6Iaz/DfwkCQsTk3yYR9PaPG7689ZHurc3JXR4LzNiAtBc8o9F1Sb31JeM0IY=
env:
  global:
  - NOKOGIRI_USE_SYSTEM_LIBRARIES=true