Fix explanation of serialize default behaviour.

I didn't understand the previous wording about pulling the dynamic segment. I found the explanation in http://emberjs.com/guides/routing/defining-your-routes/ much clearer and so edited this to be similar.
Update naming-conventions.md
wrapping long line
added in the deprecationMessage and styled
Update deleting-todos.md

added a ","
Update computed-properties.md

Missing Semi-colon on line 27
[Docs] Add instructions to README for previewing generated docs
Merge pull request #1536 from pixelhandler/preview-docs

[Docs] Add instructions to README for previewing generated docs
Merge pull request #1451 from eneiand/patch-1

Fix explanation of serialize default behaviour.
.fail() -> .catch() because fail is deprecated

See https://github.com/emberjs/ember.js/blob/master/packages/ember-runtime/lib/mixins/deferred.js#L40-L43

Thx to locks from IRC.
Merge pull request #1537 from lolmaus/patch-1

.fail() -> .catch() because fail is deprecated
Stretch background width to fit for wide screens
Merge pull request #1538 from kpfefferle/master

Stretch background width to fit for wide screens
MomentJs -> Moment.js (as it's named on its site)
Merge pull request #1540 from lolmaus/patch-2

MomentJs -> Moment.js (as it's named on its site)
Merge pull request #1534 from EdgarAllenPoe/patch-1

Update computed-properties.md
Merge pull request #1517 from OhCoder/patch-1

Update deleting-todos.md
Update /builds fixtures.
Add missing period at the end of a sentence
Merge pull request #1541 from mostwanted1976/patch-1

Add missing period at the end of a sentence