Update rendering-a-template.md

fix typo
Include yaml requirement for Ruby 2.0
Document key, namespace, url, transform customization
Merge pull request #353 from mixonic/rest-model-customizations

Document key, namespace, url, and transform customizations
Merge pull request #352 from craigteegarden/patch-1

Update rendering-a-template.md
Adding Docs on How to Log Route Changes

This is slightly easier than reading the code
Merge pull request #354 from jkmassel/master

Specifying how to enable LOG_TRANSITIONS for the router
Replaced Logo submission button with pull request
instructions. Added instructions to Yaml file.
remove traces of getPath in favour of get
Improve ContainerView guide

This needed to be updated from the refactor when ContainerView
became a MutableArray, and I added examples of defining initial
views in what I hope is a good order for building understanding.
There is also a new section mentioning the impact of ContainerView
mixing in MutableArray.
Lets see if this .gitignore was why our examples page stayed cached on
GH
last resort to flush examples/index.html from GH cache
Merge pull request #355 from lukemelia/container-view-guide-improvements

Improve ContainerView guide
update email
cleanup whitespace
Add wagaroo.com to list of Ember.js users.
remove contacts, we have this data behind the scenes.
fix broken link
Merge pull request #357 from mdcclv/patch-1

fix broken link
Move Observers section after Computed Properties sections