Add parser for remote ok
user
```ruby
require 'open-uri'
require 'nokogiri'
require 'json'

class RemoteOkParser
	def grab_front_page_jobs
		front_page_html = Nokogiri::HTML(open("https://remoteok.io/"))
		puts job_postings_as_json(front_page_html)
	end

	def grab_jobs_by_filter_word filter_word
		filtered_jobs_html = Nokogiri::HTML(open("https://remoteok.io/remote-#{filter_word}-jobs"))
		puts job_postings_as_json(filtered_jobs_html)
	end

	private
	def job_postings_as_json(html_to_parse)
		job_elements = html_to_parse.css("tr[itemtype='http://schema.org/JobPosting']")
		job_list = job_elements.map do |element|
			{ 
				:job_name => element.css("a[itemprop='url'] h2").text,
				:company_name => element.css("a[itemprop='hiringOrganization'] h3").text,
				:tags => element.css("td.tags h3").map do |tag| tag.text.split("3>")[0] end
			}
		end
	end
end```
assistant