Flesh out docs for CollectionView#getItemView

Resolves #509
Set view options before Behaviors are initialized
bump and build v1.8.3
Update marionette.behaviors.md
Merge pull request #1224 from ftdebugger/patch-1

Update marionette.behaviors.md
Fix Typo in Changelog

1.6.3 example showed a function returning an `events` hash when it should have been returning a `ui` hash.
Merge pull request #1235 from joezimjs/patch-3

Fix Typo in Changelog
Fix behaviors doc ToC
Merge pull request #1277 from thejameskyle/fix-behaviors-toc

Fix behaviors doc ToC
Bump and build v1.8.4
Should have been values not keys here
Merge pull request #1278 from therealjessesanford/master

Should have been values not keys here
Update CONTRIBUTING.md

Missing 'a'.
Merge pull request #1281 from bzalasky/patch-1

Update CONTRIBUTING.md
Update CONTRIBUTING.md

Couple more typos.
Merge pull request #1282 from bzalasky/patch-2

Update CONTRIBUTING.md
Throw exception in region when doesn't find 'el'
remove marionette.$ proxy

fixes #1000
Removes unnecessary params in appendHtml

There is no reason to pass the object; it is accessible via `this`
Changed signature of Module.prototype.initialize to match Module.prototype.constructor