tests passed with new rspec 3.0

  - no more be_true and be_false,
  instead there is be_truthy and be_falsy
  - no more have(count) matcher
  instead there is expect(count).to eq(some_count)
use POST instead of GET

  to be able to use POST method instead of GET:
  - rest_client gem agged to dependency
  - Scraper.new fixed
make request if @page empty
gem version bumped

  also unused ||= removed
Merge pull request #1 from kiote/master

Use POST instead of GET for hpr.sak.no