add train/test set sizes to results file
Remove SKLL_MAX_CONCURRENT_PROCESSES tests from .travis.yml
updated test to account for two additional lines in results dict
Merge branch 'develop' into feature/dataset-sizes
Merge branch 'feature/dataset-sizes' into develop
Merge branch 'develop' into feature/run-time
Changed number of rows to be checked for in learner results dictionary from 21 to 23 in tests/test_skll.py to accommodate two new fields added by Aoife.