First cut at a Templates/RenderingHelpers page in the Guides.

Huge thanks to darthdeus, author of this post: http://darthdeus.github.com/blog/2013/02/10/render-control-partial-view/
Made some changes and additions for Guides/Templates/RenderingHelpers.

I made some of the changes recommended by fivetanley.

I added some more example code.  I hesitate to add too much, as at some point it turns from a guide into an example app.

Added some more notes about {{render}}, including a brief comparison of {{outlet}} and {{render}}, which I hope is not confusing.

Added a comparison table of the three main rendering helpers.
Add note about updating the test when changing the HP example
Merge pull request #445 from teddyzeenny/example-comment

Add note about updating the test when changing the HP example
Renamed templates/rendering-helpers to rendering-with-helpers
Merge pull request #402 from mharris717/guide_render_helper

{{render}} helper not documented in Ember Guides
Clarify "Simple Routes" introductory sentence

(Ember newb here). As far as I can tell, the sentence was meant to convey that each route has a controller and template with the same name as the route.
Merge pull request #451 from cliftonaddepar/patch-1

Clarify "Simple Routes" introductory sentence
link to s3 builds on models index page
Merge pull request #453 from fivetanley/reference-s3-builds

link to s3 builds on models index page
it's just easier to read
Merge pull request #454 from gilesbowkett/unwieldy_phrase

rephrased description of application template
Fix context-related error in Handlebars markup on guides/templates/rendering-with-helpers.md
Merge pull request #456 from treydavis/master

Fix error in guides/templates/rendering-with-helpers.md
Added scroll support for code examples. Most helpful for mobile devises.
Merge pull request #458 from kiwiupover/code-example-scroll-support

Added scroll support for code examples. Most helpful for mobile devises.
Added missing link to Ember Data
WIP RC3
RC3 blog post edit
Update {{input}} section