Add mechanize to the Gemfile
Add tentatively working Scraper
Add Tf2rUser scaffold

rails g scaffold Tf2rUser steam_id:integer:index username:string
avatar_link:string rank_id:integer:index
Make Tf2rUser columns non-null
Add Tf2rRank scaffold

rails g scaffold Tf2rRank name:string colour:string description:string
Update Tf2rUser.steam_id column to use BIGINT; add db schema
Clarify Scraper docs and remove random puts
Add Scraper#scrape_ranks for scraping ranks from info.html
Add rake scrape task
Add tf2r_ranks resources routes back to shut rspec up
Modify specs to use valid_attributes for passing tests
Add require for mechanize in Scraper
Update Scraper methods to accept a Nokogiri::HTML::Document

This allows us to pass in files read from the filesystem