updating readme

Author: Rishabh

README.md

@@ -1,6 +1,11 @@
 # react-native-rating-element
 
-A simple rating library for react native supporting decimal point and custom icon set
+A simple rating library for react native supporting decimal point and custom icon set.
+
+I created this small library as [react-native-ratings](https://github.com/Monte9/react-native-ratings) package was causing UI issues in Android device, when applied withing touchable opacity element.
+Also the <AirbnbRating /> component, does not support fractions.
+
+This package works perfectly on android's TouchableOpacity, support icons from Ionicons and also support fractions.
 
 ## Installation
 
@@ -25,6 +30,17 @@ import { Rating } from "react-native-rating-element";
 />
 ```
 
+## API
+
+| prop | default | type | description |
+| ---- | ---- | ----| ---- |
+| `rated` | 0 | number | Represents Initial value for the rating. |
+| `totalCount` | 5 | number | Number of background stars to show. For ex. Rated 5 out of 10 stars. The 10 value is `totalCount` |
+| `ratingColor` | #b5121b | string (color) | Pass in a custom color to fill-color the rating icon. |
+| `ratingBackgroundColor`| #c8c7c8 | string (color) | Pass in a custom fill-color for the background of rating icon. It is sometimes referred as empty icon. |
+| `size` | 24 | number | Pass in a custom font size for the icon |
+| `icon` | 25 | number | Pass in a custom text for the icon. For ex. 'beer', 'bulb'. These icons are imported from package [react-native-vector-icons](https://oblador.github.io/react-native-vector-icons/). Please Note: For now this package only support Ionicons |
+
 ## Contributing
 
 Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.