Upgrade to RSpec 3

[tioteath]

Trying to perform spec execution:

bundle exec rspec
/tmp/src/puppet-crypt/vendor/bundle/ruby/2.1.0/gems/rspec-mocks-3.0.3/lib/rspec/mocks.rb:38:in `setup': wrong number of arguments (1 for 0) (ArgumentError)
    from /tmp/src/puppet-crypt/spec/spec_helper.rb:15:in `<top (required)>'

This is probably because of some incompatibility between latest stable rspec and rspec the specs was developed with.

Could you please specify exact versions for development dependencies in gemspec to eliminate this issue?

[maxlinc]

I was able to upgrade (via transpec) and run rspec without any problems. However, I see several issues open for rspec-puppet saying it has issues with rspec 3. So I'll leave it tied to rspec 2 for now.

Once rspec-puppet is stable on rspec 3, an upgrade should be possible.