README.md in healthety-0.0.1 vs README.md in healthety-0.0.2

@@ -9,15 +9,16 @@
 ### Usage
 
     require "healthety"
 
     Healthety.workers do
-      host "127.0.0.1"
+      server "127.0.0.1"
       port 8124
 
       worker :load_average do
         interval 0.5
-        value rand(10)
+        # Get load average with a system call (OS X)
+        value `w | head -n1 | cut -f4 -d":" | cut -f2 -d" "`.to_f
       end
 
       worker :memory do
         interval 2
         value rand(10)