refactored the ParseDataFile and added tests
renamed the post parser class
updated some usings
added tests to ensure parsing of blank headers
merged jchannons changes
parsed out series info and tidy up parser
bit of cleanup
fixed missing break;
trim leading / on site url
Added unit tests for series update extension
added extension method and series to layout/posts
refactored urlFormat and moved properties around
removed references to 'Post' model
fixing up the error checking and renaming some variables
renamed Id to Name and deleted 'post' model
renamed PostHeader to Post and rendered series on index
added the PostHeader.cs delete
merged changes