[ruby/time] Expose Time::VERSION

https://github.com/ruby/time/commit/32793b56b7

lib/time.gemspec

@@ -1,6 +1,13 @@
+name = File.basename(__FILE__, ".gemspec")
+version = ["lib", Array.new(name.count("-")+1).join("/")].find do |dir|
+  break File.foreach(File.join(__dir__, dir, "#{name.tr('-', '/')}.rb")) do |line|
+    /^\s*VERSION\s*=\s*"(.*)"/ =~ line and break $1
+  end rescue nil
+end
+
 Gem::Specification.new do |spec|
-  spec.name          = "time"
+  spec.name          = name
-  spec.version       = "0.2.2"
+  spec.version       = version
   spec.authors       = ["Tanaka Akira"]
   spec.email         = ["akr@fsij.org"]
 

lib/time.rb

@@ -25,6 +25,9 @@ require 'date'
 # :startdoc:
 
 class Time
+
+  VERSION = "0.2.2"
+
   class << Time
 
     #