gustav

diff --git a/README.md b/README.md
index 8d70a17..f995811 100644
--- a/README.md
+++ b/README.md
@@ -3,12 +3,28 @@ gustav
 
 [![Build Status](https://travis-ci.org/Raphexion/gustav.svg?branch=master)](https://travis-ci.org/Raphexion/gustav)
 
-A helper library.
+A helper library for two use-cases:
+
+. To help pack-up and un-pack data
+. To help with writing a udp-server
 
 Examples
 --------
 
-Packing up a dictionary into a binary payload:
+Imagine that you have a state `#{a => 1, b => 2, c => 3, d => 4}`.
+You need to pack-up this data (serialize) and send it over the wire.
+Your protocol specifies that:
+
+| Variable | Bits in payload |
+|----------|-----------------|
+| a        | 8               |
+| b        | 16              |
+| c        | 32              |
+| d        | 8               |
+
+Which can be described compactly as `[{a, 8}, {b, 16}, {c, 32}, {d, 8}]`.
+
+When using *Gustav*, packing up the dictionary into a binary payload:
 
 ```
 Dictionary = #{a => 1, b => 2, c => 3, d => 4},