Update version and dependencies for 2.0 release.

Author: gkellogg

VERSION

@@ -1 +1 @@
-2.0.0.beta2
+2.0.0

rdf.gemspec

@@ -29,9 +29,9 @@ Gem::Specification.new do |gem|
   gem.requirements               = []
   gem.add_runtime_dependency     'link_header', '~> 0.0', '>= 0.0.8'
   gem.add_runtime_dependency     'hamster',     '~> 3.0'
-  gem.add_development_dependency 'rdf-spec',    '>= 2.0.0.beta', '< 3'
-  gem.add_development_dependency 'rdf-vocab',   '>= 2.0.0.beta', '< 3'
-  gem.add_development_dependency 'rdf-xsd',     '>= 2.0.0.beta', '< 3'
+  gem.add_development_dependency 'rdf-spec',    '~> 2.0'
+  gem.add_development_dependency 'rdf-vocab',   '~> 2.0'
+  gem.add_development_dependency 'rdf-xsd',     '~> 2.0'
   gem.add_development_dependency 'rest-client', '~> 1.7'
   gem.add_development_dependency 'rspec',       '~> 3.0'
   gem.add_development_dependency 'rspec-its',   '~> 1.0'