Updates to CLI / bin utility for node-sass

add a command line binary interface for node-sass

update libsass

node-sass sass.scss output.css

Where sass.scss is the Sass file to compilte, and output.css is the filename to output.

Added fs.writeFile functionality to the node-sass bin, so that output if read in and compiled correct are then output to the filesystem based on the given arguments. Default output file is "nodesass.scss"

Did not add additional tests for this, lame.

a simplification of the default options setting

add real tests!

Pass options to render from middleware

Always include the directory of the scss file as the first path in include_paths

add scss include_path support

Windows support

Windows support - fixes issue #49

Conflicts:
	Makefile

Improved Makefile

* Remove "-c" from CFLAGS and hard-code it into the recipe -- CFLAGS
  should be overridable from the command-line but not including "-c"
  should never invoke the linker on object files
* Use real target names for library files instead of phony targets
* Add install and install-shared targets
* Use $(OBJECTS) instead of *.o
* Use .PHONY to properly mark phony targets