drop travis ruby support for 1.8 and add 2.1
Merge pull request #756 from toadkicker/rake_rspec

update rake to run rspec
Merge pull request #749 from toadkicker/travis_ruby_versions

drop travis ruby support for 1.8 and add 2.1
Merge pull request #757 from toadkicker/rake_rspec

fix travis command to run test
merge master