Try getting travis going
Only build with one perl version while I'm still figuring out travis
For debugging, print pwd before calling dzil
cd back to the original pwd after installing nanomsg
More travis debugging
More travis debugging
Fix directory stack
Remove debugging code
Test on additional perl versions
Let's see what perl builds we can use
Looks like travis-ci only has non-threaded builds
Merge branch 'rafl/travis'

* rafl/travis:
  Looks like travis-ci only has non-threaded builds
  Let's see what perl builds we can use
  Test on additional perl versions
  Remove debugging code
  Fix directory stack
  More travis debugging
  More travis debugging
  cd back to the original pwd after installing nanomsg
  For debugging, print pwd before calling dzil
  Only build with one perl version while I'm still figuring out travis
  Try getting travis going