Fix for Issue #930
sortedIndex documentation

Adding note about using strings as iterators and an example.
doc: consistent markdown links
Add index.html and underscore-min.js to .npmignore

Since Underscore is used in so many modules, it would help a lot to reduce the size of it.
Merge pull request #1054 from sindresorhus/patch-1

Add index.html and underscore-min.js to .npmignore
Merge pull request #1051 from eins78/master

consistent markdown links
Fix #1058 - Add test for recursive onced functions.
Fixed docs for every to show iterator is optional
Fix English in 'debounce()' description

There's an important difference between restrictive ('which') and nonrestrictive relative clauses ('that') in English. 

Since all versions of debounce meet the description given, 'which' is the correct word. 

Additionally this means people who don't know what a debounced function is won't stop reading (currently it implies that some unknown things have a certain behvaior, rather than all unknown things having a certain behavior, ie, right now it's not a definition, with 'which' it would be).  
Merge pull request #1065 from mikemaccana/patch-1

Fix English in 'debounce()' description
Fix #1066 - Link to jquery.com.
Tweak whitespace in reference variable declaration

Make the "quick reference variable" declaration section match up with
the style used in the ECMAScript 5 variable declaration section below.
Merge pull request #1079 from adamnbowen/patch-1

Tweak whitespace in reference variable declaration
Updating license to reflect DocumentCloud's correct attribution.
First draft of removing native fallbacks for array extras.
Merge branch 'master' of github.com:documentcloud/underscore
Revert "First draft of removing native fallbacks for array extras."

This reverts commit 69e1677829093ce1d7f1eca0159aa9a282eec967.
Merge pull request #1063 from obmarg/every-doc-fix

Fixed docs for every/all to show iterator is optional
Fixes #1056, _.union being passed an arguments object.
Fixes #1049, new version of zip/unzip