removed launchy dependency

git_stats.gemspec

@@ -21,7 +21,6 @@ Gem::Specification.new do |gem|
   gem.add_dependency('actionpack')
   gem.add_dependency('tilt')
   gem.add_dependency('haml')
-  gem.add_dependency('launchy')
   gem.add_dependency('lazy_high_charts_tomgi')
   gem.add_dependency('i18n')
 end

lib/git_stats.rb

@@ -9,7 +9,6 @@ require 'fileutils'
 require 'tilt'
 require 'pathname'
 require 'lazy_high_charts'
-require 'launchy'
 require 'i18n'
 
 require 'git_stats/base'