drop travis ruby support for 1.8 and add 2.1
update readme for issue 728
Merge pull request #752 from toadkicker/update_readme_issue_728

update readme for issue 728
update rake to run rspec
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
fix travis command to run test
Merge pull request #757 from toadkicker/rake_rspec

fix travis command to run test
command is spec not rspec
merge master
Merge pull request #758 from toadkicker/rake_rspec

command is spec not rspec
fix command to travis
added guard, pry, and rspec configuration for each
Merge pull request #759 from toadkicker/guard_rspec

added guard, pry, and rspec configuration for each