user "soft" dependency with ActiveAdmin vesio

Author: workgena

active_admin_datetimepicker.gemspec

@@ -20,7 +20,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_dependency "xdan-datetimepicker-rails", "~> 2.5.1"
-  spec.add_dependency "activeadmin", "~> 1.2.1"
+  spec.add_dependency "activeadmin", "~> 1.1"
   spec.add_development_dependency "bundler", "~> 1.8"
   spec.add_development_dependency "rake", "~> 10.0"