Merge pull request #2 from apelade/FeatureGrader

eliminate deprectations of specific error and mock
removed unnecessary output in rspecs
updated .gitignore to exclude local .travis.yml
minor refactoring
added .travis.yml to .gitignore
pull yaros grade3_spec
added AutoGrader specs
added  HW3_grader specs (iteration 1)
pull for AutoGrader specs that yaro finished,
Merge branch 'FeatureGrader' of https://github.com/YaroSpace/rag into FeatureGrader
add test for ScenarioMatcher methods