Update deps and maintainer

Author: tas50

sensu-plugins-postgres.gemspec

@@ -14,7 +14,7 @@ pvt_key = '~/.ssh/gem-private_key.pem'
 Gem::Specification.new do |s|
   s.name                   = 'sensu-plugins-postgres'
   s.version                = SensuPluginsPostgres::VERSION
-  s.authors                = ['Yieldbot, Inc. and contributors']
+  s.authors                = ['Sensu Plugins and contributors']
   s.email                  = '<sensu-users@googlegroups.com>'
   s.homepage               = 'https://github.com/sensu-plugins/sensu-plugins-postgres'
   s.summary                = ''
@@ -30,13 +30,15 @@ Gem::Specification.new do |s|
   s.platform               = Gem::Platform::RUBY
   s.required_ruby_version  = '>= 1.9.3'
 
-  s.add_development_dependency 'codeclimate-test-reporter'
-  s.add_development_dependency 'rubocop', '~> 0.30'
-  s.add_development_dependency 'rspec', '~> 3.1'
-  s.add_development_dependency 'bundler', '~> 1.7'
-  s.add_development_dependency 'rake', '~> 10.0'
-  s.add_development_dependency 'github-markup'
-  s.add_development_dependency 'redcarpet'
-  s.add_development_dependency 'yard'
-  s.add_development_dependency 'pry'
+  s.add_runtime_dependency 'sensu-plugin', '1.1.0'
+
+  s.add_development_dependency 'codeclimate-test-reporter', '~> 0.4'
+  s.add_development_dependency 'rubocop',                   '~> 0.30'
+  s.add_development_dependency 'rspec',                     '~> 3.1'
+  s.add_development_dependency 'bundler',                   '~> 1.7'
+  s.add_development_dependency 'rake',                      '~> 10.0'
+  s.add_development_dependency 'github-markup',             '~> 1.3'
+  s.add_development_dependency 'redcarpet',                 '~> 3.2'
+  s.add_development_dependency 'yard',                      '~> 0.8'
+  s.add_development_dependency 'pry',                       '~> 0.10'
 end