Update .kproj => .xproj.

Author: N. Taylor Mullen

StaticFiles.sln

@@ -7,13 +7,13 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{40EE0889-960
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "samples", "samples", "{8B21A3A9-9CA6-4857-A6E0-1A3203404B60}"
 EndProject
-Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "Microsoft.AspNet.StaticFiles", "src\Microsoft.AspNet.StaticFiles\Microsoft.AspNet.StaticFiles.kproj", "{8D7BC5A4-F19C-4184-8338-A6B42997218C}"
+Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "Microsoft.AspNet.StaticFiles", "src\Microsoft.AspNet.StaticFiles\Microsoft.AspNet.StaticFiles.xproj", "{8D7BC5A4-F19C-4184-8338-A6B42997218C}"
 EndProject
-Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "StaticFileSample", "samples\StaticFileSample\StaticFileSample.kproj", "{092141D9-305A-4FC5-AE74-CB23982CA8D4}"
+Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "StaticFileSample", "samples\StaticFileSample\StaticFileSample.xproj", "{092141D9-305A-4FC5-AE74-CB23982CA8D4}"
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "test", "test", "{EF02AFE8-7C15-4DDB-8B2C-58A676112A98}"
 EndProject
-Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "Microsoft.AspNet.StaticFiles.Tests", "test\Microsoft.AspNet.StaticFiles.Tests\Microsoft.AspNet.StaticFiles.Tests.kproj", "{CC87FE7D-8F42-4BE9-A152-9625E837C1E5}"
+Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "Microsoft.AspNet.StaticFiles.Tests", "test\Microsoft.AspNet.StaticFiles.Tests\Microsoft.AspNet.StaticFiles.Tests.xproj", "{CC87FE7D-8F42-4BE9-A152-9625E837C1E5}"
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{5EE39BF7-6457-432B-B26B-53B77A1C03D9}"
 	ProjectSection(SolutionItems) = preProject