How to build it on travis:
- Create manually the gh-pages branch.
- Copy the travis file to the project.
- Create a personal access token, encrypt it with travis and add it to the config file.
- Encrypt the license key file with travis and add it in the root directory of the project as licenseKey.txt.
- Set the ditamap and the ditaval files as env variables.
View the generated oXygen XML WebHelp at http://ctalau.github.io/userguide/.