Cleaned up view.uiBindings spec
fix docs: CollectionView getChildView
Update marionette.collectionview.md

Small markdown typo.
URL to backbone annotated source off

Section numbering on backbone must have changed since the last time this was updated.
Merge pull request #1551 from zachsitler/patch-1

Update marionette.collectionview.md
Merge pull request #1552 from paulfalgout/patch-1

URL to backbone annotated source off
Update marionette.region.md

Remove a documentation copy & paste corpse.
Merge pull request #1555 from skubus/patch-1

Update marionette.region.md
Merge pull request #1543 from thejameskyle/cleanup-view-uiBindings

Cleaned up view.uiBindings spec
Add getRegionManager method and use in _initRegionManager method.
Update docs with getRegionManager method
Add _initializeRegions and move _initRegionManager inside it.
Add region options section to docs