Merge pull request #5 from simonduq/fix-travis

Cheery-picking Adam's fix to get the regression tests working with jdk 1.7.0_45
Merge pull request #4 from simonduq/update-readme

Update readme for CALIPSO
Importing the integrated version of ORPL, from https://github.com/simonduq/orpl, commit 1b838bf4df8af9a99f1fb23bac61d9d3fe862234