Closes #417 Add png files to NuGet package.
Closes #417 Add png files to NuGet package.

jonnybee/csla,MarimerLLC/csla,ronnymgm/csla-light,jonnybee/csla,BrettJaner/csla,JasonBock/csla,JasonBock/csla,rockfordlhotka/csla,BrettJaner/csla,ronnymgm/csla-light,rockfordlhotka/csla,JasonBock/csla,MarimerLLC/csla,MarimerLLC/csla,rockfordlhotka/csla,ronnymgm/csla-light,jonnybee/csla,BrettJaner/csla