client.rb

require 'twitter'
require 'json'
require 'pp'

Twitter.configure do |config|
  config.consumer_key       = ""
  config.consumer_secret    = ""
  config.oauth_token        = ""
  config.oauth_token_secret = ""
end

# https://github.com/sferik/twitter/blob/master/lib/twitter/client.rb
client  = Twitter::Client.new()

resp    = client.get("/1/users/show.json?screen_name=twoism")
body    = resp[:body]
json    = JSON.pretty_generate(body)


pp json