Frequently used words scanner in Ruby

frequently_words.rb

module Analiser 
	extend self
	
	def parse(text)
		originalArray = text.split(/\s/).reject {|x| x.empty?}		
		repeatedWords = {}

		originalArray.each do |word|
		  word.downcase!
			if repeatedWords.has_key?(word.to_sym)
				repeatedWords[word.to_sym] += 1		
			else
				repeatedWords[word.to_sym] = 1
			end 
		end

		repeatedWords
	end
end

# Analiser.parse('hello word word hello')