More to come.

I had written the original guide for "A Guide to Testing Rails
Applications". The current documents maintains the same structure and
examples I had drafted albeit with some minor changes to keep up with
newer version of Rails.

Older version which had credits included:
http://guides.rubyonrails.org/v2.3.11/testing.html

Github lifo/docrails History:
https://github.com/rails/rails/commits/ff359af86505b4d317b7467e7f79aa2ef2c5e795/railties/doc/guides/source/testing_rails_applications.txt

Used imageoptim, Saved few bytes
http://imageoptim.com/

Move 2 images to getting_started folder. All other images in getting started guide already in this folder.

When I updated these images, I must have gotten this one wrong. Now it's
right.

Fixes #9749.

Stuff didn't work because of strong_parameters. Now the right calls are
in place.

We changed the error style, so they're all wrong. Now they're right.
😄

The release notes is changed to include only the major changes and point
to the changelogs for the complete list. This lets us talk more about the
features included in the upcoming release and make the guide more useful
and interesting than just a list of all changelogs.

This is still a WIP guide pending a lot of work.

[ci skip]

plus:

* 80 column formats
* replacing the explanation of the dynamic_form gem with the example
  HTML/CSS that Rails scaffolds generate.

This reverts commit 33284014.

Reason: this change doesn't belong to DocRails.

Compressed all images from the guide through ImageOptim which saves sometimes up to 74.6% in size [ci skip]

Revert "Compressed all images from the guide through ImageOptim which saves sometimes up to 74.6% in size [ci skip]"

Reason: this change can't really be done in docrails,
see http://weblog.rubyonrails.org/2012/3/7/what-is-docrails/

This reverts commit bc06e8d7.

Compressed all images from the guide through ImageOptim which saves sometimes up to 74.6% in size [ci skip]

section