Merge pull request #381 from ashnur/minor-repair

variable name change
v6.20.1. Bugfix.

- v6.20.1 December 24, 2012
	- Fixed `File::writeSource`
		- Thanks to [ashnur](https://github.com/ashnur) for [pull request
#381](https://github.com/bevry/docpad/pull/381)
Updated for the DocPad Website :)
v6.21.0. Improvement. Bugfix.

- v6.21.0 January 2, 2013
	- Cleanup focused around loading, parsing, and writing of files and
documents
	- Added
		- `DocPad::flowDocument`
		- `DocPad::loadDocument`
		- `exists` attribute on `File` model
	- Fixed
		- `Document::writeSource`
v6.21.1. Improvement.

- v6.21.1 January 6, 2013
	- Added support for running multiple plugin tests for the same plugin
		- Closes [issue #393](https://github.com/bevry/docpad/issues/393)
#395 Fix typo in setDefaults that forces defaults
Merge pull request #396 from stegrams/patch-1

#395 Fix typo in setDefaults that forces defaults
v6.21.2. Bugfix.

- v6.21.2 January 8, 2013
	- Fixed `Base::setDefaults` and `File::setMetaDefaults` always forcing
defaults
		- Thanks to [Stefan](https://github.com/stegrams) for [pull request
#396](https://github.com/bevry/docpad/pull/396)
Added Stefan (submitted pull request #396) to contributors.
v6.21.3. Bugfix. Improvement.

- v6.21.3 January 9, 2013
	- Fixed ignored files sometimes triggering reloads
	- Added `ignorePaths`, `ignoreHiddenFiles` options
	- Added `DocPad::isIgnoredPath`, `DocPad::scandir`, `DocPad::watchdir`
helpers
Change scripts block to allow custom attributes
v6.21.4. Bugfix. Improvement.

- v6.21.4 January 16, 2013
	- Fixed incorrect meta data parsing for certain files
		- Closes [issue #394](https://github.com/bevry/docpad/issues/394)
thanks to [Jose Quesada](https://github.com/quesada) and
[Stefan](https://github.com/stegrams)
	- Scripts and styles blocks now support an `attrs` option string
		- Closes [pull request
#397](https://github.com/bevry/docpad/pull/397) thanks to
[Alex](https://github.com/amesarosh)
		- Closes [issue #400](https://github.com/bevry/docpad/issues/400)
thanks to [edzillion](https://github.com/edzillion)
v6.21.5. Bugfix. Improvement.

- v6.21.5 January 24, 2013
	- Supports Node v0.9
	- Added `renderSingleExtensions` option
		- Note: currently this will render `src/documents/script.coffee` from
CoffeeScript to JavaScript as intended, HOWEVER the outfile will be
`out/script.coffee` instead of the expected `out/script.js`. We will
likely have to do an extension mapping for single extensions.
	- Added expiremental `docpad-compile` executable
	- Updated dependencies
		- [bal-util](https://github.com/balupton/bal-util) from ~1.15.4 to
~1.16.0
Fixed failing test on windows due to git line ending conversion