Switch to using DI to acquire Node instances. Bump versions to alpha2.

Microsoft.AspNet.NodeServices/Util/StringAsTempFile.cs

@@ -0,0 +1,39 @@
+using System;
+using System.IO;
+
+namespace Microsoft.AspNet.NodeServices {
+    // Makes it easier to pass script files to Node in a way that's sure to clean up after the process exits
+    public sealed class StringAsTempFile : IDisposable {
+        public string FileName { get; private set; }
+
+        private bool _disposedValue;
+        
+        public StringAsTempFile(string content) {
+            this.FileName = Path.GetTempFileName();
+            File.WriteAllText(this.FileName, content);
+        }
+
+        private void DisposeImpl(bool disposing)
+        {
+            if (!_disposedValue) {
+                if (disposing) {
+                    // TODO: dispose managed state (managed objects).
+                }
+
+                File.Delete(this.FileName);
+
+                _disposedValue = true;
+            }
+        }
+
+        public void Dispose()
+        {
+            DisposeImpl(true);
+            GC.SuppressFinalize(this);
+        }
+
+        ~StringAsTempFile() {
+           DisposeImpl(false);
+        }
+    }
+}