update readme with usage

Author: jmoiron

README.md

@@ -2,9 +2,119 @@ Syndication (feed) generator library for golang.
 
 Usage:
 
-```golang
+```go
 
-import "syndicate"
+import (
+    "fmt"
+    "time"
+    "github.com/jmoiron/syndicate"
+)
+
+now := time.Now()
+feed := &Feed{
+    Title:       "jmoiron.net blog",
+    Link:        &Link{Href: "http://jmoiron.net/blog"},
+    Description: "discussion about tech, footie, photos",
+    Author:      &Author{"Jason Moiron", "[email protected]"},
+    Created:     now,
+}
+
+feed.Items = []*Item{
+    &Item{
+        Title:       "Limiting Concurrency in Go",
+        Link:        &Link{Href: "http://jmoiron.net/blog/limiting-concurrency-in-go/"},
+        Description: "A discussion on controlled parallelism in golang",
+        Author:      &Author{"Jason Moiron", "[email protected]"},
+        Created:     now,
+    },
+    &Item{
+        Title:       "Logic-less Template Redux",
+        Link:        &Link{Href: "http://jmoiron.net/blog/logicless-template-redux/"},
+        Description: "More thoughts on logicless templates",
+        Created:     now,
+    },
+    &Item{
+        Title:       "Idiomatic Code Reuse in Go",
+        Link:        &Link{Href: "http://jmoiron.net/blog/idiomatic-code-reuse-in-go/"},
+        Description: "How to use interfaces <em>effectively</em>",
+        Created:     now,
+    },
+}
+
+atom, err := feed.ToAtom()
+rss, err := feed.ToRss()
+
+fmt.Println(atom, "\n", rss)
+
+```
+
+Outputs:
+
+```xml
+<?xml version="1.0" encoding="UTF-8"?>
+<feed xmlns="http://www.w3.org/2005/Atom">
+  <title>jmoiron.net blog</title>
+  <link href="http://jmoiron.net/blog"></link>
+  <id>http://jmoiron.net/blog</id>
+  <updated>2013-01-16T03:22:24-05:00</updated>
+  <summary>discussion about tech, footie, photos</summary>
+  <entry>
+    <title>Limiting Concurrency in Go</title>
+    <link href="http://jmoiron.net/blog/limiting-concurrency-in-go/"></link>
+    <updated>0001-01-01T00:00:00Z</updated>
+    <id>tag:jmoiron.net,2013-01-16:/blog/limiting-concurrency-in-go/</id>
+    <summary type="html">A discussion on controlled parallelism in golang</summary>
+    <author>
+      <name>Jason Moiron</name>
+      <email>[email protected]</email>
+    </author>
+  </entry>
+  <entry>
+    <title>Logic-less Template Redux</title>
+    <link href="http://jmoiron.net/blog/logicless-template-redux/"></link>
+    <updated>0001-01-01T00:00:00Z</updated>
+    <id>tag:jmoiron.net,2013-01-16:/blog/logicless-template-redux/</id>
+    <summary type="html">More thoughts on logicless templates</summary>
+    <author></author>
+  </entry>
+  <entry>
+    <title>Idiomatic Code Reuse in Go</title>
+    <link href="http://jmoiron.net/blog/idiomatic-code-reuse-in-go/"></link>
+    <updated>0001-01-01T00:00:00Z</updated>
+    <id>tag:jmoiron.net,2013-01-16:/blog/idiomatic-code-reuse-in-go/</id>
+    <summary type="html">How to use interfaces &lt;em&gt;effectively&lt;/em&gt;</summary>
+    <author></author>
+  </entry>
+</feed>
+
+<?xml version="1.0" encoding="UTF-8"?>
+<rss version="2.0">
+  <channel>
+    <title>jmoiron.net blog</title>
+    <link>http://jmoiron.net/blog</link>
+    <description>discussion about tech, footie, photos</description>
+    <managingEditor>[email protected] (Jason Moiron)</managingEditor>
+    <pubDate>2013-01-16T03:22:24-05:00</pubDate>
+    <item>
+      <title>Limiting Concurrency in Go</title>
+      <link>http://jmoiron.net/blog/limiting-concurrency-in-go/</link>
+      <description>A discussion on controlled parallelism in golang</description>
+      <pubDate>2013-01-16T03:22:24-05:00</pubDate>
+    </item>
+    <item>
+      <title>Logic-less Template Redux</title>
+      <link>http://jmoiron.net/blog/logicless-template-redux/</link>
+      <description>More thoughts on logicless templates</description>
+      <pubDate>2013-01-16T03:22:24-05:00</pubDate>
+    </item>
+    <item>
+      <title>Idiomatic Code Reuse in Go</title>
+      <link>http://jmoiron.net/blog/idiomatic-code-reuse-in-go/</link>
+      <description>How to use interfaces &lt;em&gt;effectively&lt;/em&gt;</description>
+      <pubDate>2013-01-16T03:22:24-05:00</pubDate>
+    </item>
+  </channel>
+</rss>
 
 ```