Add note about head.js to readme.

Closes #1569.
edit
Benjamin Tan 2016-12-11 16:28:27 +08:00
parent 90b301d0a0
commit 4d0f1adc40
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@ -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