fix code markup in readme

sethvincent · sethvincent · commit 4e51dffd8a80 · 2014-09-28T16:51:29.000-07:00
diff --git a/readme.md b/readme.md
@@ -6,7 +6,9 @@
 
 Open your terminal and run this command:
 
-`npm install --global javascripting`
+```
+npm install --global javascripting
+```
 
 The `--global` option installs this module globally so that you can run it as a command in your terminal.
 
