Add package.json with volo support

This allows Marionette to be installed from the GitHub repo using the volo package manager.
Typo - "change the `renderTemplate` method" should be "change the `render` method"
Merge pull request #150 from bruno-c/patch-1

renderTemplate -> render
Renderer.render does not return a Promise object anymore
Added note to remind that if Renderer.render is overridden, TemplateCache.get needs to be called explicitly
Merge pull request #151 from bruno-c/patch-2

Renderer.render does not return a Promise object anymore
Return a deferred promise from Region.show
Updated AppRouter documentation

Updated the 'Configure Routes' section to show how to peform both
appRoutes and routes setups.  Spent 2 hours trying to figure out why my
appRoutes method was undefined so I hope this helps others.
Merge pull request #154 from robjefferies/master

Updated AppRouter documentation
added 'render' and 'before:render' events to CollectionView

- ItemView and CompositeView both trigger a 'render' and 'before:render'
event, CollectionView did only trigger a 'collection:rendered' and
'before:collection:rendered' event.
Corrected variable name within the jQuery get call (line 145)
Merge remote-tracking branch 'brantb/feature-volo' into dev
Merge remote-tracking branch 'tgcondor/patch-1' into dev
Merge remote-tracking branch 'clemens/render_event_on_collection_render' into dev
Merge remote-tracking branch 'adamwerner/patch-1' into dev
release notes for v0.9.2
version bump to v0.9.2
build v0.9.2
Fix volo.url property so volo can find the built script.

I erroneously thought that {version} was replaced with the name of the
latest semver-compatible tag name (including the `v`), but it's actually
just the version number. Added the `v` so volo can actually fetch the
script when you run `volo add backbone.marionette`.
Merge pull request #157 from brantb/feature-volo

volo.url in package.json has the wrong URL.
updating readme to link to google group