Add Travis configuration.

Author: ForNeVeR

.travis.yml

@@ -0,0 +1,9 @@
+language: csharp
+mono: latest
+solution: Naggum.sln
+install:
+    - nuget restore Naggum.sln
+    - nuget install xunit.runner.console -Version 2.1.0 -OutputDirectory testrunner
+script:
+    - xbuild /p:Configuration=Release /p:TargetFrameworkVersion="v4.5" Naggum.sln
+    - mono ./testrunner/xunit.runner.console.2.1.0/tools/xunit.console.exe ./Naggum.Test/bin/Release/Naggum.Test.dll

Naggum.sln

@@ -25,6 +25,7 @@ EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution items", "Solution items", "{F85A1ACB-4A60-46A9-856D-92A3C9B97402}"
 	ProjectSection(SolutionItems) = preProject
 		.editorconfig = .editorconfig
+		.travis.yml = .travis.yml
 		appveyor.yml = appveyor.yml
 		License.md = License.md
 		Readme.md = Readme.md