bump ruby version to 2.2.4 and fix rspec dependecy spec

Vincent Landgraf · Vincent Landgraf · commit 4caa29eda8e7 · 2016-08-16T11:44:03.000+02:00
diff --git a/.ruby-version b/.ruby-version
@@ -1 +1 @@
-2.2.3
+2.2.4
diff --git a/vmstat.gemspec b/vmstat.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |gem|
   gem.extensions    = ["ext/vmstat/extconf.rb"]
 
   gem.add_development_dependency('rake')
-  gem.add_development_dependency('rspec', "~> 2.9.0")
+  gem.add_development_dependency('rspec', "~> 2.9")
   gem.add_development_dependency('rake-compiler')
   gem.add_development_dependency('guard-rspec')
   gem.add_development_dependency('timecop')
