Add nuget config (#29)

* add nuget.config to silence warnings
add .idea/ to .gitignore

* add .vscode to gitignore, for now

.gitignore

@@ -348,3 +348,7 @@ MigrationBackup/
 
 # Ionide (cross platform F# VS Code tools) working folder
 .ionide/
+.idea/
+
+# for now, ignore vscode configs
+.vscode/

nuget.config

@@ -0,0 +1,17 @@
+<configuration>
+    <!-- `clear` ensures no additional sources are inherited from another config file. -->
+    <packageSources>
+        <clear />
+        <!-- `key` can be any identifier for your source. -->
+        <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
+    </packageSources>
+
+    <!-- Define mappings by adding package patterns beneath the target source. -->
+    <!-- Contoso.* packages and NuGet.Common will be restored from contoso.com, everything else from nuget.org. -->
+    <packageSourceMapping>
+        <!-- key value for <packageSource> should match key values from <packageSources> element -->
+        <packageSource key="nuget.org">
+            <package pattern="*" />
+        </packageSource>
+    </packageSourceMapping>
+</configuration>