Check screenshots on Travis using Docker and Selenium
Check screenshots on Travis using Docker and Selenium

Thanks to the docker service provided by Travis CI, we should be able to
download and use the Selenium docker images in order to run our
screenshotter and check whether all the screenshots match the images from
the repository.

kwangkim/katex-npm-0.7.0-pre,azotova/KaTeX,saschatimme/KaTeX,kevinbarabash/KaTeX,xymostech/KaTeX,kevinbarabash/KaTeX,Khan/KaTeX,azotova/KaTeX,saschatimme/KaTeX,saschatimme/KaTeX,kwangkim/KaTeX,Khan/KaTeX,kwangkim/katex-npm-0.7.0-pre,saschatimme/KaTeX,kevinbarabash/KaTeX,azotova/KaTeX,kwangkim/KaTeX,kwangkim/katex-npm-0.7.0-pre,xymostech/KaTeX,xymostech/KaTeX,xymostech/KaTeX,azotova/KaTeX,kwangkim/KaTeX,kwangkim/katex-npm-0.7.0-pre,Khan/KaTeX,kwangkim/KaTeX,xymostech/KaTeX,kwangkim/KaTeX,azotova/KaTeX,saschatimme/KaTeX,kevinbarabash/KaTeX,kevinbarabash/KaTeX,kwangkim/katex-npm-0.7.0-pre