Modifies the Array class in Ruby to support sorting by valid version numbers

sort_by_version_number

#Modify Array prototype
class Array
  #Sorts numerically descending, period 
	#separated occurences ie. file.10.1.2.3.git
	def sort_by_version_number!
		regex = /(([0-9]+\.?){4,})\./
		self.sort! do |a,b|
			#Get version numbers
			a = Gem::Version.new(a.match(regex)[1])
			b = Gem::Version.new(b.match(regex)[1])
			#Return comparison result
			a > b ? -1 : 1
		end
		self
	end

	#Get the latest version
	def latest_version
		self.sort_by_version_number!
		self.first
	end
end