Merge pull request #329 from json-api-dotnet/fix/#241

specify symbols server for develop

Author: jaredcnance

Diff for: appveyor.yml

@@ -44,6 +44,7 @@ deploy:
   api_key:
     secure: 6CeYcZ4Ze+57gxfeuHzqP6ldbUkPtF6pfpVM1Gw/K2jExFrAz763gNAQ++tiacq3
   skip_symbols: false
+  symbol_server: https://www.myget.org/F/research-institute/symbols/api/v2/package
   on:
     branch: develop
 - provider: NuGet