The main change in this PR is the relaxing of the rpsec dependency, which allows us (Travis team) to use this with vagrant, but I have also corrected the Gemfile (use gemspec) and some tiny whitespace corrections in Rakefile and gemspec.
Thanks a bundle for a great tool!
relax the rspec dependency constraint
update the Gemfile to use gemspec, and relock
some minor alignment and whitespace changes in the Rakefile