From 1bd0bcaf6e60dc7812785ac40c4d8c5c29afd4a0 Mon Sep 17 00:00:00 2001
From: Mark Stosberg <mark@rideamigos.com>
Date: Wed, 19 Nov 2014 08:20:15 -0500
Subject: [PATCH] Update README to mention that get() throws excewptions, and
 also `config.has()`. Addresses #173.

These are important and common details to encounter, and worth mentioning up front.
---
 History.md | 4 ++++
 README.md  | 8 ++++++++
 2 files changed, 12 insertions(+)

diff --git a/History.md b/History.md
index ad10ec44..3a67c8ed 100644
--- a/History.md
+++ b/History.md
@@ -1,4 +1,8 @@
 
+
+  * Highlight `config.has()` in the README. Use it to check to if a value exists, since `config.get()`
+    throws exceptions on undefined values. (@markstos)
+
 1.8.1 / 2014-11-14
 ==================
 
diff --git a/README.md b/README.md
index abbfc83d..2596dfa0 100644
--- a/README.md
+++ b/README.md
@@ -77,6 +77,14 @@ The following examples are in JSON format, but configurations can be in other [f
     var dbConfig = config.get('Customer.dbConfig');
     db.connect(dbConfig, ...);
 
+    if (config.has('optionalFeature.detail')) {
+      var detail = config.get('optionalFeature.detail');
+      ...
+    }
+
+`config.get()` will throw an exception for undefined keys to help catch typos and missing values.
+Use `config.has()` to test if a configuration value is defined.
+
 **Start your app server:**
 
     $ export NODE_ENV=production