ruby on rails - Require_relative cannot load such file version -

i'm trying load new gem created, , don't have have code yet, because when tried load test error appeared.

my code: gem name tracky.

tracky.gemspec

lib = file.expand_path('../lib', __file__) $load_path.unshift(lib) unless $load_path.include?(lib) require 'tracky/version'  gem::specification.new |spec|   spec.name          = "tracky"   spec.version       = tracky::version   spec.authors       = ["matheus mendes"]   spec.email         = ["matheus.mendescf@gmail.com"]   spec.summary       = %q{todo: write short summary. required.}   spec.description   = %q{todo: write longer description. optional.}   spec.homepage      = ""   spec.license       = "mit"    spec.files         = [`git ls-files -z`.split("\x0")]   spec.executables   = spec.files.grep(%r{^bin/}) { |f| file.basename(f) }   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})   spec.require_paths = ["lib"]    spec.add_development_dependency "bundler", "~> 1.7"   spec.add_development_dependency "rake", "~> 10.0" end 

my folder:

http://postimg.org/image/ve7nlyja7/ 

error:

irb(main):001:0> require_relative 'lib/tracky' loaderror: cannot load such file -- tracky/version     /home/matheus/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'     /home/matheus/.rbenv/versions/2.2.2/lib/ruby/2.2.0/rubygems/core_ext/kernel_require.rb:54:in `require'     /home/matheus/ruby/tracky/lib/tracky.rb:1:in `<top (required)>'     (irb):1:in `require_relative'     (irb):1     /home/matheus/.rbenv/versions/2.2.2/bin/irb:11:in `<main>' 

i'm using irb in root of tracky