epiceditor not working on rails 5

[Rodieche]

I can't get it work on rails 5 application, I always recive the next error :

Bundler could not find compatible versions for gem "rails":
In snapshot (Gemfile.lock):
rails (= 5.0.0)

In Gemfile:
rails (~> 5.0.0)

epiceditor was resolved to 0.0.0, which depends on
  rails (~> 4.0.0)

Running bundle update will rebuild your snapshot from scratch, using only
the gems in your Gemfile, which may resolve the conflict.

I made 'bundle update' but its the same, if somebody make it work tell me pls