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.
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.
Merge branch 'master' of git://github.com/documentcloud/underscore