Update installation section of readme to reflect "go get" vs old "goinstall".
diff --git a/Readme.md b/Readme.md
index 733b816..f700526 100644
--- a/Readme.md
+++ b/Readme.md
@@ -17,9 +17,10 @@
 This package also provides a convenience wrapper for each function in
 package fmt that takes a format string.
 
-## Installing
 
-    $ goinstall github.com/kr/pretty
+## Installation
+
+    $ go get github.com/kr/pretty
 
 then