Merge pull request #4 from jonschlinkert/master

new convenience methods...
Merge pull request #5 from jonschlinkert/master

update, rebuild documentation
adds `extend` function
Merge branch 'extend' of https://github.com/assemble/assemble-yaml into extend
Using sort-object

Using sort-object and cleaning up some jshint errors.
Merge pull request #6 from doowb/extend

Extend
adds extend method. removes newline regex since it was triggering some wierd bug in marked.js.