Added Windows Live Writer instructions.

Added a section to the readme that describes how to connect to MiniBlog
with Windows Live Writer as of build 14.0.8117.416.
Merge pull request #86 from jschwarty/master

Added Windows Live Writer instructions.
Added support for GetCategories so themes can use categories for menus
repaired web.config reformatting woes
Merge pull request #88 from bradygaster/master

Added support for GetCategories so themes can use categories for menus