image_voodoo.gemspec in image_voodoo-0.8.9 vs image_voodoo.gemspec in image_voodoo-0.9.0

@@ -1,8 +1,8 @@
 # -*- encoding: utf-8 -*-
 
-$LOAD_PATH.push File.expand_path('../lib', __FILE__)
+$LOAD_PATH.push File.expand_path('lib', __dir__)
 require 'image_voodoo/version'
 
 Gem::Specification.new do |s|
   s.name        = 'image_voodoo'
   s.version     = ImageVoodoo::VERSION
@@ -18,6 +18,13 @@
   s.files         = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
   s.executables   = `git ls-files -- bin/*`.split("\n").map { |f| File.basename(f) }
   s.require_paths = %w[lib vendor]
   s.has_rdoc      = true
+
+  s.add_development_dependency 'jar-dependencies'
+  s.add_development_dependency 'rake'
+  s.add_development_dependency 'ruby-maven'
+  s.add_development_dependency 'test-unit'
+
+  s.requirements << 'jar com.drewnoakes, metadata-extractor, 2.11.0'
 end