update README

README.md

@@ -66,19 +66,22 @@ requests with an access token.
 ```ruby
 # Fetch a location
 id = '6fdf0530-3e4e-46f1-9d11-5f90c48a50dc'
-location = FrederickAPI::V2::Location.find(id)
-=> #<FrederickAPI::V2::Location:0x007fd2f29a7618>
-
-location.name
-=> 'Bizzy Biz'
-
-# Update a location
-location.name = 'Biz Bizziest'
-location.save
-=> true
-
-# To instantiate a resource for update without fetching it first, set an id
-location = FrederickAPI::V2::Location.new(id: id)
-location.update_attributes(phone_number: '(555) 555-5555')
-=> true
+access_token = '9jsdo320fjfkfdksls30dfdcd919bcaa1b7804dbbebda0'
+FrederickAPI::V2::Location.with_access_token(access_token) do
+  location = FrederickAPI::V2::Location.find(id)
+  # => #<FrederickAPI::V2::Location:0x007fd2f29a7618>
+
+  location.name
+  # => 'Bizzy Biz'
+
+  # Update a location
+  location.name = 'Biz Bizziest'
+  location.save
+  # => true
+
+  # To instantiate a resource for update without fetching it first, set an id
+  location = FrederickAPI::V2::Location.new(id: id)
+  location.update_attributes(phone_number: '(555) 555-5555')
+  # => true
+end
 ```