Add the missing removeTodo method to the sample.
Add a guide on the router flow when a user clicks on a link-to
Note about exception being raised and how to address.
No need to duplicate stuff here and in the show-only-incomplete-todos.md file.

We can expect people to read the Todos guide from beginning to end, so I don't think we need to duplicate the exact text on multiple pages. Hence, I feel that this change makes it look a bit more polished and elegant (even though it can certainly still be improved further).
Add a cookbook on using slugs instead of ids in the url
Put linear-gradient in line with w3c spec
Fixed whitespace left and right
added whitespaces
Update computed-properties-and-aggregate-data.md

A code example of an array being filtered when the array only has one example is not terribly interesting (and probably doesn't get the point across as much). My suggestion is to make the example a little more interesting, while keeping it relatively simple still.
Update computed-properties-and-aggregate-data.md

Modified to go along with my other change
[website] [master] Resolver logging on debug page

Fixes that we don't mention the better logging that @rljackson added for default resolver.
Relates to: https://github.com/emberjs/ember.js/pull/4655
and also, was mentioning it in this discussion and realised it wasn't present in the debug section: http://discuss.emberjs.com/t/nested-resources-and-dynamic-segments/5111/4
Adjust with comments from rjackson
Update inflection in deleting todos section of guide
[website] fix missing desc. on getting started

This PR fixes #1499. Adds in an explicit description to remove the `selected` class from the "all" link.
Use updated examples for query params new

Straight from the horse's mouth: https://github.com/emberjs/ember.js/pull/4008
added in the deprecationMessage and styled
Update toggle-todo-editing-state.md

Adding more details to prevent misplacing the code. Since "isEditing: false" is followed by a comma, this piece of code must be added before "isCompleted:...".
Updating how to view Ember Data cached records
Update deleting-todos.md

added a ","
Update computed-properties.md

Missing Semi-colon on line 27