changed vmBuilder to use IEnumerable instead of list
Ignoring App_Data
Removed raven folder
ignored raven folder
Initial Changes
New Books
Added guard statement
Merge branch '4-ExtractMethods' of https://github.com/joshrizzo/Readability into 4-ExtractMethods

Conflicts:
	Readability.Tests/App_Data/Indexes/Auto%2fBooks/CommitPoints/0000000000000000013/index.commitPoint
	Readability.Tests/App_Data/Indexes/Auto%2fBooks/CommitPoints/0000000000000000013/segments_d
	Readability/App_Data/Data
	Readability/App_Data/Indexes/Auto%2fBooks/CommitPoints/0000000000000000015/to-delete.commitPoint
	Readability/App_Data/Indexes/Auto%2fBooks/segments.gen
	Readability/App_Data/system/RVN.chk
	Readability/Raven/CompiledIndexCache/-1802922878.0UTGyPkynEHVjWsm2tVk8g%3d%3d.nodebug.dll