Malformed pagination causes problems

[CloCkWeRX]

Dubbo's ATDIS feed does this:

$ bundle exec ruby scraper.rb 
Saving page 1 of 7
Saving page 2 of 7
Saving page 3 of 7
Saving page 4 of 7
Saving page 5 of 8
Saving page 6 of 7
Saving page 7 of 13
/home/clockwerx/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/bundler/gems/atdisplanningalertsfeed-ce20de6801cf/lib/atdisplanningalertsfeed.rb:22:in `save_page': undefined method `current' for nil:NilClass (NoMethodError)
    from /home/clockwerx/.rbenv/versions/2.2.4/lib/ruby/gems/2.2.0/bundler/gems/atdisplanningalertsfeed-ce20de6801cf/lib/atdisplanningalertsfeed.rb:17:in `save'
    from scraper.rb:6:in `<main>'

For the best chance of success, we should probably ignore the published pagination and proceed until there are no results on the next page.