Add deprecation notice

sethwklein · sethwklein · commit 6d2668133a8e · 2014-01-01T01:16:18.000-05:00
Please use sethwklein.net/go/errutil instead. It provides the same
features, but without the duplication of the standard errors package.
diff --git a/DEPRECATED b/DEPRECATED
@@ -0,0 +1,5 @@
+Deprecated
+
+This package has been deprecated. Please use sethwklein.net/go/errutil instead.
+It provides the same features, but without the duplication of the standard
+errors package.
diff --git a/README b/README
@@ -1,3 +1,9 @@
+Deprecated
+
+This package has been deprecated. Please use sethwklein.net/go/errutil instead.
+It provides the same features, but without the duplication of the standard
+errors package.
+
 What?
 
 Package errors provides things for working with single and multiple errors and
diff --git a/doc.go b/doc.go
@@ -1,5 +1,9 @@
 // Package errors provides things for working with single and multiple errors.
 //
+// This package has been deprecated. Please use sethwklein.net/go/errutil
+// instead. It provides the same features, but without the duplication of
+// the standard errors package.
+//
 // It is a drop in replacement for the standard errors package
 // but with extra features for handling multiple errors
 // and correctly handling errors from deferred calls.
