Split out 'socket' hosting model into a separate optional NuGet package, since most developers won't need it

src/Microsoft.AspNetCore.NodeServices.Sockets/webpack.config.js

@@ -0,0 +1,20 @@
+module.exports = {
+    target: 'node',
+    externals: ['fs', 'net', 'events', 'readline', 'stream'],
+    resolve: {
+        extensions: [ '.ts' ]
+    },
+    module: {
+        loaders: [
+            { test: /\.ts$/, loader: 'ts-loader' },
+        ]
+    },
+    entry: {
+        'entrypoint-socket': ['./TypeScript/SocketNodeInstanceEntryPoint'],
+    },
+    output: {
+        libraryTarget: 'commonjs',
+        path: './Content/Node',
+        filename: '[name].js'
+    }
+};