Fix iniparse gem dependency

Gemfile

@@ -7,7 +7,6 @@ group :development do
   # gem dependency because we expect to be installed within the
   # Vagrant environment itself using `vagrant plugin`.
   gem "vagrant", :git => "https://github.com/mitchellh/vagrant.git"
-  gem 'iniparse', '~> 1.4', '>= 1.4.2'
 end
 
 group :plugins do

vagrant-aws.gemspec

@@ -16,6 +16,7 @@ Gem::Specification.new do |s|
   s.rubyforge_project         = "vagrant-aws"
 
   s.add_runtime_dependency "fog", "~> 1.22"
+  s.add_runtime_dependency "iniparse", "~> 1.4", ">= 1.4.2"
 
   s.add_development_dependency "rake"
   # rspec 3.4 to mock File