#all_products method returns a NameError with message "undefined local variable or method 'results'"

[nurmuhammadsirat]

require 'semantics3'
API_KEY = 'SEM3xxxxxxxxxxxxxxxxxxxxxx'
API_SECRET = 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
sem3 = Semantics3::Products.new(API_KEY,API_SECRET)
sem3.products_field( "search", "iphone" )
sem3.all_products

This will return:

NameError: undefined local variable or method `results' for #<Semantics3::Products:0x007fb0a2ab5f90>
    from /path/to/gems/semantics3-0.11/lib/semantics3.rb:101:in `all_products'

I believe this is caused in because the "results" in this line should be a string.
Current:

if not @query_result.has_key?(results)

Probably should be:

if not @query_result.has_key?("results")