Rails 4.2 compatible issue

[evgenii]

When I try to bundle in rails 4.2

Bundler could not find compatible versions for gem "sprockets-rails":
  In Gemfile:
    chosen-rails (>= 0) ruby depends on
      sass-rails (>= 3.2) ruby depends on
        sprockets-rails (~> 2.0.0) ruby

    rails (~> 4.2.0.beta4) ruby depends on
      sprockets-rails (3.0.0.beta1)

Bundler could not find compatible versions for gem "railties":
  In Gemfile:
    chosen-rails (>= 0) ruby depends on
      railties (~> 3.0) ruby

    rails (~> 4.2.0.beta4) ruby depends on
      railties (4.2.0.beta4)

[tsechingho]

resolved in #70