Add section paralellizing your build on multiple VMs
Add example to parallelizing on multiple VMs section
add TravisPy
add Python to apps ToC
add Tron CI to apps
Update Firefox version
Merge branch 'gh-pages' of github.com:travis-ci/docs-travis-ci-com into gh-pages
Announce suspension of multi-OS feature
Better header for parallelizing on multiple VMs. Text fixes.
Merge pull request #104 from travis-ci/ha-suspending-mutlit-os-feature

Announce suspension of multi-OS feature
Merge pull request #103 from ArturT/parallelizing-on-multiple-vms

Add section paralellizing your build on multiple VMs