latexmk apt dep for latexpdf

Author: danimtb

.travis.yml

@@ -3,6 +3,6 @@ python:
   - "3.6"
 install:
   - pip install -r requirements.txt
-  - sudo apt-get install -y texlive-latex-base texlive-fonts-recommended texlive-fonts-extra texlive-latex-extra
+  - sudo apt-get install -y texlive-latex-base texlive-fonts-recommended texlive-fonts-extra texlive-latex-extra latexmk
 script:
   - python deploy_gh_pages.py