try to fix travis

Author: nuest

.travis.yml

@@ -6,8 +6,9 @@ install:
  - "pip install mkdocs"
  - "pip install mkdocs-cinder"
  - "pip install markdown-include"
+ - "sudo apt-get install xfonts-base xfonts-75dpi"
  - "wget https://bitbucket.org/wkhtmltopdf/wkhtmltopdf/downloads/wkhtmltox-0.13.0-alpha-7b36694_linux-trusty-amd64.deb"
- - "sudo dpkg -it wkhtml*.deb"
+ - "sudo dpkg -i wkhtml*.deb"
 after_success:
  - if [[ $TRAVIS_BRANCH == 'master' && $TRAVIS_PULL_REQUEST == 'false' ]]; then ./.deploy.sh ; fi
 env: