Cutting 1.8.6 build

Cutting version 1.8.5

Cut build 1.8.4

update read me

Cutting build 1.8.2

Update description for full 1.8.1 release.

Creating a pre-release version of nv.d3.js.

Manually applying pull request #292, this fixes #291

Merge branch 'master' into massive-merge

Conflicts:
	README.md

Changing nv.dev to equal false.