added categories to RSS
added author to RSS result and included ALL posts in RSS not paged
Use search pattern and options for EnumerateFiles

```EnumerateFiles``` has an overload which allows a search pattern and search options. Swapped it to use this with the default search pattern of '*' and the ```SearchOption.AllDirectories```, which searches the current directory and it's subdirectories.
Merge pull request #119 from jchannon/rsstags

added categories,authors,all posts to RSS
Merge pull request #120 from sgrassie/search-all-directories-for-posts

Allow posts to be stored in subdirectories
updated all nugets
updated barbato to use latest jquery
moved posts / drafts to base view model
added 1.8.0
Merge pull request #124 from phillip-haydon/issue#122

Moved Posts / Drafts to base view model