Revert "lowercase instance var in example code"

This reverts commit 8d41eaa81eb1549ef38c2d539d5473fbb360e8a0.
Fix #2417 - Use apply to implement slice.
Don't attach url if passed as an option in Model
Merge pull request #2420 from gsamokovarov/model-no-url-option

Don't attach url if passed as an option in Model
Fix #2422 - Clarify docs about changed attributes.
Merge pull request #2423 from braddunbar/model-changed

Fix #2422 - Clarify docs about changed attributes.
Don't accept urlRoot from Model and url from Collection
Remove the redundant documentation bits
Merge pull request #2426 from gsamokovarov/no-url-no-urlroot

Don't accept urlRoot from Model and url from Collection
fixed documentation anchor
Merge pull request #2429 from zyzniewski/master

Fixed documentation anchor for Collection#fetch
Fixed tiny typo in FAQ
Merge pull request #2433 from CSNW/faq-typo

Fixed tiny typo in FAQ
Add license to package.json
Merge pull request #2435 from theoreticaLee/master

Add backbone's license info to package.json
Clarification on optional parameters and trailing slashes in routes documentation
Merge pull request #2445 from alexmcpherson/master

Documentation paragraph for a common misconception about routes with trailing slashes.
adding missing comma
Fix #2438 - Indicate shallow copying.
Fix #2446 `save` should always `set` with `validate: true` by default