[dnsimple|dns] small model fixes

Gemfile.lock

@@ -15,7 +15,7 @@ GEM
   remote: http://rubygems.org/
   specs:
     builder (3.0.0)
-    excon (0.5.5)
+    excon (0.5.6)
     formatador (0.0.16)
     json (1.5.1)
     mime-types (1.16)

lib/fog/dns/models/dnsimple/zone.rb

@@ -9,7 +9,7 @@ module Fog
 
         identity :id
 
-        attribute :domain,     :aliases => "name"
+        attribute :domain,     :aliases => [:name, 'name']
         attribute :created_at
         attribute :updated_at
 

lib/fog/dns/models/dnsimple/zones.rb

@@ -15,7 +15,7 @@ module Fog
         end
 
         def get(zone_id)
-          data = connection.get_domain(zone_id).body["domain"]
+          data = connection.get_domain(zone_id).body['domain']
           new(data)
         rescue Excon::Errors::NotFound
           nil