Update README.md

README.md

@@ -43,63 +43,67 @@ If your project uses a lot of scrapers – for example, [OpenCorporates](http:/
 
 You can validate a scraper's metadata (how often it runs, what fields it stores, etc.) like so:
 
-    require 'scraperwiki-api'
-    api = ScraperWiki::API.new
+```ruby
+require 'scraperwiki-api'
+api = ScraperWiki::API.new
 
-    info = api.scraper_getinfo('example-scraper').first
+info = api.scraper_getinfo('example-scraper').first
 
-    describe 'example-scraper' do
-      include ScraperWiki::API::Matchers
-      subject {info}
+describe 'example-scraper' do
+  include ScraperWiki::API::Matchers
+  subject {info}
 
-      it {should be_protected}
-      it {should be_editable_by('frabcus')}
-      it {should run(:daily)}
-      it {should_not be_broken}
+  it {should be_protected}
+  it {should be_editable_by('frabcus')}
+  it {should run(:daily)}
+  it {should_not be_broken}
 
-      # Validate the properties of a SQLite table by chaining on a +on+.
-      it {should have_a_row_count_of(42).on('swdata')}
+  # Validate the properties of a SQLite table by chaining on a +on+.
+  it {should have_a_row_count_of(42).on('swdata')}
 
-      # Ensure that the scraper sets required fields.
-      it {should have_at_least_the_keys(['name', 'email']).on('swdata')}
+  # Ensure that the scraper sets required fields.
+  it {should have_at_least_the_keys(['name', 'email']).on('swdata')}
 
-      # Ensure that the scraper doesn't set too many fields.
-      it {should have_at_most_the_keys(['name', 'email', 'tel', 'fax']).on('swdata')}
-    end
+  # Ensure that the scraper doesn't set too many fields.
+  it {should have_at_most_the_keys(['name', 'email', 'tel', 'fax']).on('swdata')}
+end
+```
 
 And you can validate the scraped data like so:
 
-    require 'scraperwiki-api'
-    api = ScraperWiki::API.new
+```ruby
+require 'scraperwiki-api'
+api = ScraperWiki::API.new
 
-    data = api.datastore_sqlite('example-scraper', 'SELECT * from `swdata`')
+data = api.datastore_sqlite('example-scraper', 'SELECT * from `swdata`')
 
-    describe 'example-scraper' do
-      include ScraperWiki::API::Matchers
-      subject {data}
+describe 'example-scraper' do
+  include ScraperWiki::API::Matchers
+  subject {data}
 
-      # If you need at least one of a set of fields to be set:
-      it {should set_any_of(['name', 'first_name', 'last_name'])}
+  # If you need at least one of a set of fields to be set:
+  it {should set_any_of(['name', 'first_name', 'last_name'])}
 
-      # Validate the values of individual fields by chaining on an +in+.
-      it {should_not have_blank_values.in('name')}
-      it {should have_unique_values.in('email')}
-      it {should have_values_of(['M', 'F']).in('gender')}
-      it {should have_values_matching(/\A[^@\s]+@[^@\s]+\z/).in('email')}
-      it {should have_values_starting_with('http://').in('url')}
-      it {should have_values_ending_with('Inc.').in('company_name')}
-      it {should have_integer_values.in('year')}
+  # Validate the values of individual fields by chaining on an +in+.
+  it {should_not have_blank_values.in('name')}
+  it {should have_unique_values.in('email')}
+  it {should have_values_of(['M', 'F']).in('gender')}
+  it {should have_values_matching(/\A[^@\s]+@[^@\s]+\z/).in('email')}
+  it {should have_values_starting_with('http://').in('url')}
+  it {should have_values_ending_with('Inc.').in('company_name')}
+  it {should have_integer_values.in('year')}
 
-      # If you store a hash or an array of hashes in a field as a JSON string,
-      # you can validate the values of these subfields by chaining on an +at+.
-      it {should have_values_of(['M', 'F']).in('extra').at('gender')}
+  # If you store a hash or an array of hashes in a field as a JSON string,
+  # you can validate the values of these subfields by chaining on an +at+.
+  it {should have_values_of(['M', 'F']).in('extra').at('gender')}
 
-      # Check for missing keys within subfields.
-      it {should have_values_with_at_least_the_keys(['subfield1', 'subfield2']).in('fieldA')}
+  # Check for missing keys within subfields.
+  it {should have_values_with_at_least_the_keys(['subfield1', 'subfield2']).in('fieldA')}
 
-      # Check for extra keys within subfields.
-      it {should have_values_with_at_most_the_keys(['subfield1', 'subfield2', 'subfield3', 'subfield4']).in('fieldA')}
-    end
+  # Check for extra keys within subfields.
+  it {should have_values_with_at_most_the_keys(['subfield1', 'subfield2', 'subfield3', 'subfield4']).in('fieldA')}
+end
+```
 
 More documentation at [RubyDoc.info](http://rdoc.info/gems/scraperwiki-api/ScraperWiki/API/Matchers).