README.md in imgix-3.4.0 vs README.md in imgix-4.0.0

@@ -46,40 +46,17 @@
 
 Initialize a client with a `:domain` and your `:secure_url_token`. By default, HTTPS URLs are generated, but you can toggle that by passing `use_https: false`.
 
 Call `Imgix::Client#path` with the resource path to get an `Imgix::Path` object back. You can then manipulate the path parameters, and call `Imgix#Path#to_url` when you're done.
 
-``` ruby
+```rb
 client = Imgix::Client.new(domain: 'your-subdomain.imgix.net', secure_url_token: 'your-token')
 
 client.path('/images/demo.png').to_url(w: 200)
 #=> https://your-subdomain.imgix.net/images/demo.png?w=200&s=2eadddacaa9bba4b88900d245f03f51e
-
-# OR
-path = client.path('/images/demo.png')
-path.width = 200
-path.to_url
-
-# OR
-client.path('/images/demo.png').width(200).height(300).to_url
-
-# Some other tricks
-path.defaults.width(300).to_url # Resets parameters
-path.rect(x: 0, y: 50, width: 200, height: 300).to_url # Rect helper
 ```
 
-**Deprecation Notice:** Usage of `:host` has been deprecated and will become invalid in the next major release.
-
-In the previous version, `:host` can be used to specify a domain for an `Imgix::Client` like so:
-
-```ruby
-Imgix::Client.new(host: 'demo.imgix.net', secure_url_token: 'token')
-```
-
-Code using `:host` like the above will continue to work until the next major release. While using `:host` will remain valid until the next major release, its usage will result in a deprecation warning. In order to resolve these deprecation warnings before upgrading to the new release, use `:domain` instead of `:host`.
-
-
 ## Srcset Generation
 
 The imgix gem allows for generation of custom `srcset` attributes, which can be invoked through `Imgix::Path#to_srcset`. By default, the `srcset` generated will allow for responsive size switching by building a list of image-width mappings.
 
 ```rb
@@ -216,24 +193,12 @@
 https://testing.imgix.net/image.jpg?w=100&dpr=3&q=35 3x,
 https://testing.imgix.net/image.jpg?w=100&dpr=4&q=23 4x,
 https://testing.imgix.net/image.jpg?w=100&dpr=5&q=20 5x
 ```
 
-## Multiple Parameters
-
-When the imgix api requires multiple parameters you have to use the method rather than an accessor.
-
-For example to use the noise reduction:
-
-``` ruby
-path.noise_reduction(50,50)
-```
-
 ## Purge Cache
 
-**Deprecation Notice:** The API keys used in `Imgix::Client#purge` version `3.3.X` have been deprecated. To utilize the updated `Imgix::Client#purge` method in version `4.0.0`, please regenerate your API key at `http://dashboard.imgix.com/api-keys`. Feel free to reach out to our [support line]([e-mail]) if you have any questions or concerns.
-
-If you need to remove or update an image on imgix, you can purge it from our cache by initializing a client with your api_key, then calling Imgix::Client#purge with the resource path.
+If you need to remove or update an image on imgix, you can purge it from our cache by initializing a client with your [API key](http://dashboard.imgix.com/api-keys), then calling `Imgix::Client#purge` with the resource path.
 
 ```ruby
 client = Imgix::Client.new(domain: 'your-subdomain.imgix.net', api_key: 'your-key')
 client.purge('/images/demo.png')
 ```