Update .travis.yml

Author: akankaria

.travis.yml

@@ -16,5 +16,5 @@ script:
 
     - cp ./Authorize.NET/bin/Debug/AuthorizeNet.dll ./sample-code-csharp/
     - xbuild ./sample-code-csharp/SampleCode.csproj
-    - xbuild ./sample-code-csharp/blob/master/SampleCodeTest/SampleCodeTest.csproj 
+    - xbuild ./SampleCodeTest/SampleCodeTest.csproj 
     - nunit-console ./sample-code-csharp/SampleCodeTest/SampleCodeTest.csproj