Installation on Windows does NOT work

[fourpixels]

Hi there,
I wanted to try this theme on windows, but I couldn't make it work. I've got Ruby, RubyGems, DevKit and all needed. I use bundle install as described, and I get this result (re-run):

>bundle install
Using i18n 0.7.0
Using json 1.8.3
Using minitest 5.8.3
Using thread_safe 0.3.5
Using addressable 2.4.0
Using sass 3.4.20
Using thor 0.19.1
Using colorator 0.1
Using colored 1.2
Using ffi 1.9.10
Using mercenary 0.3.5
Using mini_portile2 2.0.0
Using parallel 1.6.1
Using yell 2.0.5
Using rb-fsevent 0.9.7
Using kramdown 1.9.0
Using liquid 3.0.6
Using rouge 1.10.1
Using safe_yaml 1.0.4
Using jekyll-paginate 1.1.0
Using posix-spawn 0.3.11
Using yajl-ruby 1.2.1
Using bundler 1.11.2
Using tzinfo 1.2.2
Using jekyll-sass-converter 1.4.0
Using bourbon 4.2.6
Using ethon 0.8.0
Using rb-inotify 0.9.5
Using nokogiri 1.6.7.1
Using pygments.rb 0.6.3
Using activesupport 4.2.5
Using typhoeus 0.8.0
Using listen 3.0.5
Using html-proofer 2.6.1
Using jekyll-watch 1.3.0
Using jekyll 3.0.1
Bundle complete! 6 Gemfile dependencies, 36 gems now installed.
Use `bundle show [gemname]` to see where a bundled gem is installed.

But then, when using jekyll serve, I got:

>jekyll serve
WARN: Unresolved specs during Gem::Specification.reset:
      jekyll-watch (~> 1.1)
WARN: Clearing out unresolved specs.
Please report a bug if this causes problems.
Configuration file: (...)/simplest/_config.yml
  Dependency Error: Yikes! It looks like you don't have jekyll-paginate or one of its dependencies installed. In order to use Jekyll as currently configured, you'll need to install this gem. The full error message from Ruby is: 'cannot load such file -- jekyll-paginate'
If you run into trouble, you can find helpful resources at http://jekyllrb.com/help/!
jekyll 3.1.2 | Error:  jekyll-paginate

I've tried removing jekyll-paginate from the config, but then I get:

>jekyll serve
WARN: Unresolved specs during Gem::Specification.reset:
      jekyll-watch (~> 1.1)
WARN: Clearing out unresolved specs.
Please report a bug if this causes problems.
Configuration file: (...)/simplest/_config.yml
       Deprecation: You appear to have pagination turned on, but you haven't included the `jekyll-paginate` gem. Ensure you have `gems: [jekyll-paginate]` in your configuration file.
  Dependency Error: Yikes! It looks like you don't have kramdown or one of its dependencies installed. In order to use Jekyll as currently configured, you'll need to install this gem. The full error message from Ruby is: 'cannot load such file -- kramdown' If you run into trouble, you can find helpful resources at http://jekyllrb.com/help/!
jekyll 3.1.2 | Error:  kramdown

So I'm somehow thinking the dependencies are not installed properly. How can I get this one working, having in mind I'm not a Ruby guy at all :) Thanks!