def underscore_to_camelcase(underscore_string)
      underscore_string = underscore_string.gsub(/(_)/,' ').split(' ').each { |word| word.capitalize! }.join("") unless underscore_string.match(/_/).nil?
      underscore_string = underscore_string if underscore_string.match(/_/).nil?
      return underscore_string
    end
def underscore_to_camelcase(underscore_string)
      underscore_string = underscore_string.gsub(/(_)/,' ').split(' ').each { |word| word.capitalize! }.join("") unless underscore_string.match(/_/).nil?
      underscore_string = underscore_string if underscore_string.match(/_/).nil?
      return underscore_string
    end
Conver underscore to camelcase