Bump gem version

Gemfile

@@ -2,5 +2,5 @@ source "https://rubygems.org"
 
 ruby '2.3.1'
 
-gem 'uk_planning_scraper', :git => 'https://github.com/adrianshort/uk_planning_scraper/', :ref => '747bb06'
+gem 'uk_planning_scraper', :git => 'https://github.com/adrianshort/uk_planning_scraper/', :ref => '8d15678'
 gem 'scraperwiki', :git => 'https://github.com/openaustralia/scraperwiki-ruby/', :branch => 'morph_defaults'

Gemfile.lock

@@ -1,7 +1,7 @@
 GIT
   remote: https://github.com/adrianshort/uk_planning_scraper/
-  revision: 747bb06258a4bd7466f778dd0c94bf5ee01149b3
-  ref: 747bb06
+  revision: 8d15678700bbe4286d956b71759bac0f3a2c78f0
+  ref: 8d15678
   specs:
     uk_planning_scraper (0.2.0)
       http