error while installing ruby_dep, Bundler cannot continue

[fessyfoo]

when I run bundle using any ruby version listed in travis.yml

i get an error from bundler about installing ruby_dep and it requiring a newer version of ruby.

% bundle 
...
An error occurred while installing ruby_dep (1.4.0), and Bundler cannot continue.
Make sure that `gem install ruby_dep -v '1.4.0'` succeeds before bundling.
%
% gem install ruby_dep -v '1.4.0'
ERROR:  Error installing ruby_dep:
        ruby_dep requires Ruby version >= 2.2.5, ~> 2.2.
% 
% ruby -v 
ruby 2.1.6p336 (2015-04-13 revision 50298) [x86_64-darwin15.0]

if I run bundle with version 2.3 of ruby and then run rake I get an error about Syck #539

just trying to run the tests. :)

[jaxxstorm]

I'm gonna bump the whole travis config for the next release, to make sure we're testing with the right ruby versions :)

A PR would be appreciated.

[jaxxstorm]

Oh, I realised what you're doing now :)

bundle install --without system_tests development

Should work :)