Merge pull request #14 from wernerglinka/master

Added conditional draft use in readme file

README.md

@@ -1,6 +1,6 @@
 # @metalsmith/drafts
 
-A metalsmith plugin to hide drafts.
+A metalsmith plugin to hide drafts. Metalsmith will not build a page that is marked as draft.
 
 [![metalsmith: core plugin][metalsmith-badge]][metalsmith-url]
 [![npm: version][npm-badge]][npm-url]
@@ -42,6 +42,17 @@ draft: true
 ---
 ```
 
+To build pages that are marked as draft during development, use the metalsmith-if plugin to check the node environment and include the draft page in the build accordingly.
+
+```js
+const when = require('metalsmith-if');
+...
+const isProduction = process.env.NODE_ENV === 'production';
+...
+.use(when(isProduction, drafts()))
+
+```
+
 ### Default value for `draft`
 
 You can instruct `@metalsmith/drafts` to mark files as `draft` by default if they don't have a `draft` property in their front-matter: