ignore favicon.ico in bower package
update copyright year range
Merge pull request #2983 from gdi2290/patch-1

update copyright year range
Fix #2976 Do not add multiple models with same `id`
Merge pull request #2986 from caseywebdev/gh-2976

Fix #2976 Do not add multiple models with same `id`
Merge branch 'master' of https://github.com/jashkenas/backbone into native-view