The "SqlMapper.cs is too damned big" file split; also removes C#3 support and .NET 3.5 support (sorry, but legacy by too many years)

Fix broken link in README

Fixes #357

Simple Func to allow provision of TypeMaps automatically

Added basic support for custom type maps in collection parameters

Table properties that implement Table<T,TId> instead of Table<T> are not recognized during the initialization of the Database<T> class. As a result, these properties remain uninitialized after the call to Database<T>.Init().

// Works fine
public Table<Person> Persons { get; set; }

// Remains 'null' after Init
public Table<Car, Guid> Cars { get; set; }

Merge branch 'defaultStringType' of https://github.com/kppullin/dapper-dot-net into kppullin-defaultStringType

Conflicts:
	Dapper/SqlMapper.cs

Conflicts:
	Dapper NET40/SqlMapper.cs

Added the GridReader.Read method with Type [] types and …

TODO: Centralize the adapter repeated code down to an abstract class

- New project which targets .NET 3.5.
- CSHARP30 debug symbol.
- if statements for dynamic parameters.
- Used .ToArray with string.Join().
- Remove optional parameters on .NET 3.5
- Remove named arguments

Only set UdtTypeName when value isn't DBNull

Update SqlMapper.cs

- code improvements