Summary example. (#315)

* Summary example.

* Update README.md

README.md

@@ -524,13 +524,17 @@ The recent posts sections shows the four latest published blog posts, with their
 You can enable it in the configuration file.
 
 ```toml
+summaryLength = 70
+
 [params.recent_posts]
     enable = true
     title = "From our blog"
     subtitle = "Pellen
     hide_summary = false
 ```
 
+Recent posts use `.Summary` property and by default, Hugo automatically takes the first 70 words of your content as its summary and stores it into the `.Summary` page variable for use in your templates. You may customize the summary length by setting summaryLength in your site configuration.
+
 #### Footer
 
 In the footer there are three blocks customizables: `About us`, `Recent posts` and `contact`. Each block can be set via parameters.

exampleSite/config.toml

@@ -10,6 +10,8 @@ disqusShortname = "devcows"
 # Enable Google Analytics by entering your tracking code
 googleAnalytics = ""
 
+# number of words of summarized post content (default 70)
+summaryLength = 70
 
 # Define the number of posts per page
 paginate = 10

exampleSite/content/blog/hugo-is-for-lovers.md

@@ -4,6 +4,7 @@ date = "2015-08-03T13:39:46+02:00"
 tags = ["hugo"]
 categories = ["pseudo"]
 banner = "img/banners/banner-3.jpg"
+summary="This is the summary Goto [hugo releases](https://github.com/spf13/hugo/releases) and download the appropriate version for your os and architecture. Save it somewhere specific as we will be using it in the next step. More complete instructions are available at [installing hugo](/overview/installing/)"
 +++
 
 ## Step 1. Install Hugo