remove json export

foreman.gemspec

@@ -16,7 +16,6 @@ Gem::Specification.new do |gem|
   gem.files = Dir["**/*"].select { |d| d =~ %r{^(README|bin/|data/|ext/|lib/|spec/|test/)} }
   gem.files << "man/foreman.1"
 
-  gem.add_dependency 'json',           '~> 1.5.1'
   gem.add_dependency 'term-ansicolor', '~> 1.0.5'
   gem.add_dependency 'thor',           '>= 0.13.6'