Fix broken link in readme.

The link was going to a 404 (https://github.com/AutoMapper/AutoMapper/blob/develop/AutoMapper/AutoMapper/wiki/Getting-started). Replaced with a fully qualified URL.
.NET 4 PCL now passing all tests
Fixing warnings
Removing Should hard reference in favor of embedded code
All xunit tests passing now
Build working with SL4
SL4 unit tests compiling
Going instead to SL4 unit test project
Trying StatLight
Silverlight unit tests running and in the build but failing
Silverlight 4 support in now
Windows Phone 7.1+ compiling with tests
Win RT version compiling including unit tests
Tests passing for WinRT
Fixing unit testing order
Fixing the common assembly info
Getting the samples to compile again
WP8 fixes
Fixing local build to not publish. Trying a different route
Changing assembly names to be different for all unit tests - same name but different folders was causing confusion for test runners