CsvImportTask for RavenDb Import Studio

So I created a CsvImportTask for RavenDb studio. It is exactly what it sounds like. You select a CSV and it will create documents based on the columns.

It could probably use some enhancements :

- extra input fields to specify EntityName
- Allow for input of metadata

I couldn't find any unit tests for the tasks in the solution. Also I had to upgrade the solution to VS2012 to work on it. Please be careful when merging.

I also used a nuget package of KBcsv to parse CSVs as efficiently and correctly as possible.

Thanks,

Khalid Abuhakmeh