enable travis build

Author: Sergey Kanzhelev

.travis.yml

@@ -0,0 +1,7 @@
+language: csharp
+mono: none
+dotnet: 2.0.0
+script:
+  - dotnet restore
+  - dotnet build 
+  - dotnet test ./test/OpenCensus.Tests/OpenCensus.Tests.csproj

.vscode/tasks.json

@@ -0,0 +1,17 @@
+{
+    // See https://go.microsoft.com/fwlink/?LinkId=733558
+    // for the documentation about the tasks.json format
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build",
+            "command": "dotnet build",
+            "type": "shell",
+            "group": "build",
+            "presentation": {
+                "reveal": "silent"
+            },
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

src/OpenCensus/OpenCensus.csproj

@@ -5,6 +5,7 @@
     <VersionPrefix>0.1.0</VersionPrefix>
     <VersionSuffix>beta1</VersionSuffix>
     <TargetFrameworks>net46;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks Condition="$(OS) != 'Windows_NT'">netstandard2.0</TargetFrameworks>
     <AssemblyName>OpenCensus</AssemblyName>
     <GenerateAssemblyConfigurationAttribute>false</GenerateAssemblyConfigurationAttribute>
     <GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute>

test/OpenCensus.Tests/OpenCensus.Tests.csproj

@@ -3,20 +3,14 @@
   <PropertyGroup>
     <Description>Unit test project for OpenCensus</Description>
     <TargetFrameworks>net46;netcoreapp2.0</TargetFrameworks>
+    <TargetFrameworks Condition="$(OS) != 'Windows_NT'">netcoreapp2.0</TargetFrameworks>
     <AssemblyName>OpenCensus.Tests</AssemblyName>
     <PackageId>OpenCensus.Tests</PackageId>
     <PackageTags>OpenCensus;Tracing;Management;Monitoring</PackageTags>
     <PackageProjectUrl>http://opencensus.io</PackageProjectUrl>
     <PackageLicenseUrl>http://www.apache.org/licenses/LICENSE-2.0</PackageLicenseUrl>
     <RootNamespace>OpenCensus</RootNamespace>
   </PropertyGroup>
-  
-  
-  <ItemGroup>
-    <!--None Update="xunit.runner.json">
-      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
-    </None-->
-  </ItemGroup>
 
   <ItemGroup>
     <ProjectReference Include="..\..\src\OpenCensus\OpenCensus.csproj" />