update activesupport version dependency to support rails 5

dspace_rest_client.gemspec

@@ -5,10 +5,10 @@ require 'dspace/version'
 
 Gem::Specification.new do |spec|
   spec.date = '2016-03-14'
-  spec.name = "dspace_rest_client"
+  spec.name = 'dspace_rest_client'
   spec.version = Dspace::VERSION
-  spec.authors = ["Mauricio Giacomini Girardello", "Lucas Ernesto Kindinger", "Bruno N. Zanette", "Mateus Rambo Strey"]
-  spec.email = ["mauriciogiacomini4@gmail.com", "kindingerlek@hotmail.com"]
+  spec.authors = ['Mauricio Giacomini Girardello', 'Lucas Ernesto Kindinger', 'Bruno N. Zanette', 'Mateus Rambo Strey']
+  spec.email = ['mauriciogiacomini4@gmail.com', 'mateus.rstrey@gmail.com' 'kindingerlek@hotmail.com']
   spec.summary = 'DSpace REST API Client for Ruby'
   spec.description = 'DSpace REST-API Client for Ruby! Implements all DSpace REST-API endpoints requests.'
   spec.homepage = 'https://gitlab.c3sl.ufpr.br/c3sl/dspace-rest-client'
@@ -16,15 +16,15 @@ Gem::Specification.new do |spec|
   spec.test_files = `git ls-files -z spec/`.split("\0")
   spec.files = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(spec)/}) }
   spec.executables = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
-  spec.require_paths = ["lib"]
+  spec.require_paths = ['lib']
 
-  spec.add_runtime_dependency "json", '~> 1.8', '>= 1.8.3'
-  spec.add_runtime_dependency "resource_kit", "~> 0.1.4"
-  spec.add_runtime_dependency "faraday", "~> 0.9.2"
-  spec.add_runtime_dependency "net-http-persistent", '~> 2.9', '>= 2.9.4'
-  spec.add_runtime_dependency "activesupport", '~> 4.2', '>= 4.2.0'
+  spec.add_runtime_dependency 'json', '~> 1.8', '>= 1.8.3'
+  spec.add_runtime_dependency 'resource_kit', '>= 0.1.4'
+  spec.add_runtime_dependency 'faraday', '~> 0.9.2'
+  spec.add_runtime_dependency 'net-http-persistent', '~> 2.9', '>= 2.9.4'
+  spec.add_runtime_dependency 'activesupport', '>= 4.2.0'
 
-  spec.add_development_dependency "bundler", "~> 1.10"
-  spec.add_development_dependency "rake", "~> 10.0"
+  spec.add_development_dependency 'bundler', '~> 1.10'
+  spec.add_development_dependency 'rake', '~> 10.0'
   spec.add_development_dependency 'rspec', '~> 3.4', '>= 3.4.0'
 end