Updated Core API (markdown)

Core-API.md

@@ -82,8 +82,7 @@ Goes to the previous slide. If the page is vertical, it will animate the scroll
 <a name="registerPlugin"></a>
 
 ### `registerPlugin(key, cto)`
-Registers a plugin to be loaded when the instance is created. It allows
-(on purpose) to replace default plugins.
+Registers a plugin to be loaded when the instance is created. It allows (on purpose) to replace default plugins.
 
 Those being:
 
@@ -101,4 +100,20 @@ Those being:
 | Param | Type | Description |
 | --- | --- | --- |
 | key | <code>string</code> | They key under which it'll be stored inside of the instance, inside the plugins dict. |
-| cto | <code>function</code> | Plugin constructor. |
+| cto | <code>function</code> | Plugin constructor. |
+
+You can [read more](Plugin-development) about plugin development.
+
+### Public properties
+
+These properties are inside of the WebSlides instance and they could be useful to achieve new behaviours.
+
+- `el`: The DOM node to which WebSlides is attached.
+- `isMoving`: A Boolean indicating whether a transition is happening.
+- `slides`: An array of `Slide` instances. A new `Slide` instance is created for every `section` inside of `el`.
+- `isVertical`: A Boolean indicating whether WebSlides is in vertical mode.
+- `plugins`: Plugins dict which allows you to manually control some of them.
+- `options`: An object with all the options given to the constructor (as seen above).
+- `initialised`: A Boolean indicating whether WebSlides has finished the initialisation or not.
+
+## `Slide` class