language : node_js
node_js :
    - "0.8"
    - "0.10"
before_install:
    - npm install -g npm
before_script :
    - npm install -g grunt-cli

language : node_js
node_js :
    - "0.8"
    - "0.10"
python:
    - "2.7"
before_install:
    - sudo pip install mkdocs
    - npm install -g npm
before_script :
    - npm install -g grunt-cli

Install mkdocs before running the build
Install mkdocs before running the build
