Remove embedded version #s, use Gemfile

Gemfile

@@ -9,6 +9,7 @@ gem 'autoparse', '>= 0.3.2'
 gem 'faraday', '~> 0.8.1'
 gem 'multi_json', '>= 1.0.0'
 gem 'extlib', '>= 0.9.15'
+gem 'jwt', '~> 0.1.5'
 gem 'jruby-openssl', :platforms => :jruby
 
 group :development do