update README

README.md

@@ -1,4 +1,18 @@
-# Puppet sysctl for Boxen
+# SysCTL Puppet Module for Boxen
 
-FIXME: update me bro
+Requires the following boxen modules:
 
+* `boxen`
+
+## Usage
+
+```puppet
+# define your own sysctl setting
+# updates both running env and persists for reboots
+sysctl::set { 'somekey':
+  value => 'somevalue'
+}
+
+# we provide some defaults you can include
+include sysctl::ipforwarding
+```