Updated build script

Setting copyright to MicroLite Project Contributors instead of myself
Add extension methods for ForConnection
Added some missing null checks
Suppressed CA1020

Suppressed for:
MicroLite.Logging
MicroLite.Mapping.Inflection
MicroLite.Infrastructure.Web
MicroLite.Dialect
Tweaked Document project
Combined extensions into single class.
Added some missing tests to improve coverage