Fix travis fold
Fix travis fold

The `\r` was absolutely needed, such that the example at

  http://enricostano.github.io/articles/dealing-with-travis-ci-console-output/

is replicated.

matlab2tikz/matlab2tikz,matlab2tikz/matlab2tikz,egeerardyn/matlab2tikz,miscco/matlab2tikz,nidrosianDeath/matlab2tikz,LJeub/matlab2tikz,PeterPablo/matlab2tikz,egeerardyn/matlab2tikz,RPeschke/matlab2tikz