THRIFT-4039 Update of Apache Thrift .Net Core lib
Client: NetCore
Patch: Volodymyr Gotra <vgotra@gmail.com>

This closes #1163

Changes:
- Added framed transport, updated docs, updated global.json with SDKversion
- Added usage to multiplexer to tutorial
- Changed sdk to current sdk 1.0.0-preview2-1-003177
diff --git a/test/netcore/global.json b/test/netcore/global.json
index 53f1811..42ed97a 100644
--- a/test/netcore/global.json
+++ b/test/netcore/global.json
@@ -1,3 +1,6 @@
 {
-  "projects": [ "../../lib/netcore" ]
+  "projects": [ "../../lib/netcore" ],
+   "sdk": {
+    "version": "1.0.0-preview2-1-003177" // "1.0.0-preview2-003121", "1.0.0-preview4-004233"
+  }
 }
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