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 => 'cad5fcd'
+gem 'uk_planning_scraper', :git => 'https://github.com/adrianshort/uk_planning_scraper/', :ref => 'ae6c9f6'
 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: cad5fcd2b98260572dccf0a4cf1ddfeabc469a43
-  ref: cad5fcd
+  revision: ae6c9f68092dcdcbb839c4bc0f73af793194dd45
+  ref: ae6c9f6
   specs:
     uk_planning_scraper (0.4.0)
       http