Changes for nuget and CI support

Summary:
For now i setup the CI using VSTS (Visual Studio Team Services) , i m using my own account, but i want to move this to a Travis setup so it would be easy ported to Facebook own build system. We can also take a look on how buck can help with this.

Here's a overview of my dashboard for the build and release process on VSTS:

<img width="1084" alt="screen shot 2017-02-16 at 23 52 07" src="https://cloud.githubusercontent.com/assets/1235097/23046869/ff4dcada-f4a3-11e6-8d09-fb8974fb58d4.png">

The all process is pretty simple, there's a few tricks here and there, but the basic steps are:

<img width="1036" alt="builds" src="https://cloud.githubusercontent.com/assets/1235097/23046874/0cb95fc2-f4a4-11e6-8fd8-3048be7ffd9d.png">

These run for every commit and publish the artifacts, then the release lane takes that artifacts and builds a nuget, after that (and it's not implemented yet) we run UI Tests on devices Android , iOS for the nuget created and run tests on UWP and .net45 on both windows and OS X so
Closes https://github.com/facebook/yoga/pull/408

Reviewed By: emilsjolander

Differential Revision: D4576542

Pulled By: splhack

fbshipit-source-id: 66e0e4c1cb3721ed7aa7118e4e226b6ec575fea8

csharp/Windows/Facebook.Yoga/Facebook.Yoga.csproj

@@ -93,6 +93,8 @@
     <PlatformTarget>x86</PlatformTarget>
     <ErrorReport>prompt</ErrorReport>
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    <DocumentationFile>
+    </DocumentationFile>
   </PropertyGroup>
   <ItemGroup>
     <!-- A reference to the entire .NET Framework is automatically included -->

csharp/Windows/Facebook.Yoga/project.json

@@ -1,12 +1,12 @@
 {
-  "dependencies": {
-    "Microsoft.NETCore.Portable.Compatibility": "1.0.1",
-    "NETStandard.Library": "1.6.0"
-  },
-  "frameworks": {
-    "netstandard1.1": {}
-  },
-  "language": "en",
-  "supports": {},
-  "version": "3.0.0-*"
+    "dependencies": {
+        "Microsoft.NETCore.Portable.Compatibility": "1.0.1",
+        "NETStandard.Library": "1.6.1"
+    },
+    "frameworks": {
+        "netstandard1.1": {}
+    },
+    "language": "en",
+    "supports": {},
+    "version": "3.0.0-*"
 }