Update minimum Ruby version to 1.9.3, add travis-ci support for 2.0.0

Update: * gemspec's minimum Ruby version to >= 1.9.3 * .ruby-version to use 2.0.0 (newest supported ruby version) Remove: * Ruby 1.9.2 testing for travis-ci Add: * Ruby 2.0.0 testing for travis-ci

Author: kevinjalbert

.ruby-version

@@ -1 +1 @@
-1.9.3-p392
+2.0.0

.travis.yml

@@ -1,8 +1,8 @@
 language: ruby
 
 rvm:
- - 1.9.2
  - 1.9.3
+ - 2.0.0
 
 bundler_args: --without darwin debug
 

git_statistics.gemspec

@@ -14,7 +14,7 @@ Gem::Specification.new do |gem|
  gem.files = Dir['lib/**/*']
  gem.test_files = Dir['spec/**/*_spec.rb']
  gem.executables = %w[ git_statistics git-statistics ]
- gem.required_ruby_version = '>= 1.9.1'
+ gem.required_ruby_version = '>= 1.9.3'
 
  gem.add_dependency('json')
  gem.add_dependency('rugged')