enabled unit testing using google test framework and wrote some simple tests
added some comments
fixed order of loading of parameters
separated the tests into different files
added get host data test
fixed the format of the assertions
added tests for the parameter system
changed min-scan-lines step size
set airway cropping method to lung in parameter presets
added exception to initParameters if file was not found
merged sintefs code into my code
Fixed path bug and a malloc issue.
Merge branch 'master' of https://github.com/smistad/Tube-Segmentation-Framework
Changed submodule to smistads branches.