Add prop table to the README

Author: cahilfoley

README.md

@@ -44,19 +44,33 @@ ReactDOM.render(
 
 ## Configuration
 
-An optional `color`, `style`, and `snowflakeCount` property can be passed in to the component.
+Optional properties can be provided to customise the animation.
 
 ```jsx
 <Snowfall
-  // Changes the snowflake color
-  color="red"
-  // Applied to the canvas element
+  // The color of the snowflake, can be any valid CSS color.
+  color="#fff"
+  // Applied to the canvas element.
   style={{ background: '#fff' }}
-  // Controls the number of snowflakes that are created (default 150)
+  // Controls the number of snowflakes that are created (defaults to 150).
   snowflakeCount={200}
 />
 ```
 
+All available properties are detailed below.
+
+| Property          | Description                                                                                                                                                                                                                                                                              | Default       |
+| ----------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------- |
+| `changeFrequency` | The frequency in frames that the wind and speed values will update.                                                                                                                                                                                                                      | `200`         |
+| `color`           | The color of the snowflake, can be any valid CSS color.                                                                                                                                                                                                                                  | `'#dee4fd'`   |
+| `images`          | An array of images that will be rendered as the snowflakes instead of the default circle shapes.                                                                                                                                                                                         | `undefined`   |
+| `radius`          | The minimum and maximum radius of the snowflake in pixels.<br/><br/>The value for each snowflake will be randomly selected within this range.                                                                                                                                            | `[0.5, 3.0]`  |
+| `rotationSpeed`   | The minimum and maximum rotation speed of the snowflake (in degrees of rotation per frame).<br/><br/>The rotation speed determines how quickly the snowflake rotates when an image is being rendered.<br/><br/>The value for each snowflake will be randomly selected within this range. | `[-1.0, 1.0]` |
+| `snowflakeCount`  | The number of snowflakes to be rendered.                                                                                                                                                                                                                                                 | `150`         |
+| `speed`           | The minimum and maximum speed of the snowflake (in pixels per frame).<br/><br/>The speed determines how quickly the snowflake moves along the y axis (vertical speed).<br/><br/>The value for each snowflake will be randomly selected within this range.                                | `[1.0, 3.0]`  |
+| `style`           | Any style properties that will be passed to the canvas element.                                                                                                                                                                                                                          | `undefined`   |
+| `wind`            | The minimum and maximum wind of the snowflake (in pixels per frame).<br/><br/>The wind determines how quickly the snowflake moves along the x axis (horizontal speed).<br/><br/>The value for each snowflake will be randomly selected within this range.                                | `[-0.5, 2.0]` |
+
 ## Using Images
 
 Instead of rendering colored circles you can instead pass in an array of image elements