First pass at test suite
Adding test_protrait to test suite
merge in master and got portrait plots to work
uncommented out first test case
Updated installer message on how to run the test suite
turn on graphics test only if vcs present
Adding correct png for testPortrait
Adding image comparison code
Merge pull request #145 from doutriaux1/issue_113_add_test_suite

Issue 113 add test suite - LGTM, merging