Add note about head.js to readme.

Closes #1569.
2016-12-11 16:28:27 +08:00 · 2016-12-11 16:28:27 +08:00 · 4d0f1adc40
commit 4d0f1adc40
parent 90b301d0a0
1 changed files with 1 additions and 0 deletions
--- a/README.md
+++ b/README.md
@ -363,6 +363,7 @@ You can add your own extensions using the same syntax. The following properties
 - **callback**: [optional] Function to execute when the script has loaded
 - **condition**: [optional] Function which must return true for the script to be loaded

+To load these dependencies, Reveal.js requires [head.js](http://headjs.com/) *(a script loading library)* to be loaded before Reveal.js.

 ### Ready Event