Use logging module instead of print() function
Make logger injectable into Madx, Model, Service
Revert rename of cdash URL
Update package name in travis build script
Merge branch 'update-travis' into replace-print-by-logging
Merge pull request #71 from coldfix/update-travis

Update Travis build script (due to repository rename)
Merge pull request #40 from pymad/replace-print-by-logging

Use `logging` instead of `print`