Added dot files to the solution

Author: asbjornu

src/GitTools.Core.sln

@@ -12,6 +12,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = ".misc", ".misc", "{72ECAB81
 		..\README.md = ..\README.md
 		Settings.StyleCop = Settings.StyleCop
 		SolutionAssemblyInfo.cs = SolutionAssemblyInfo.cs
+		..\.gitattributes = ..\.gitattributes
+		..\.gitignore = ..\.gitignore
 	EndProjectSection
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GitTools.Core.Tests", "GitTools.Core.Tests\GitTools.Core.Tests.csproj", "{0834BE9B-5CDE-4CAB-A683-C70A7D91450B}"