add process.env shim ns

Author: dnolen

src/main/cljs/process/env.cljs

@@ -0,0 +1,12 @@
+;; Copyright (c) Rich Hickey. All rights reserved.
+;; The use and distribution terms for this software are covered by the
+;; Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
+;; which can be found in the file epl-v10.html at the root of this distribution.
+;; By using this software in any fashion, you are agreeing to be bound by
+;; the terms of this license.
+;; You must not remove this notice, or any other, from this software.
+
+(ns process.env
+  "A shim namespace for the Node.js process library")
+
+(goog-define NODE_ENV "development")