Updating dependencies to include UUIDTools.

tasks/gem.rake

@@ -30,6 +30,7 @@ namespace :gem do
     s.add_runtime_dependency('faraday', '~> 0.7.0')
     s.add_runtime_dependency('multi_json', '>= 1.3.0')
     s.add_runtime_dependency('extlib', '>= 0.9.15')
+    s.add_runtime_dependency('uuidtools', '>= 2.1.0')
 
     # Dependencies used in the CLI
     s.add_runtime_dependency('launchy', '>= 2.0.0')