- Updated readme

Author: avishayil

README.md

@@ -33,9 +33,9 @@ const App: () => React$Node = () => {
     <View>
       <UserAvatar size="100" name="Avishay Bar" />
       <UserAvatar size="100" name="Avishay Bar" src="https://dummyimage.com/100x100/000/fff" />
-      <UserAvatar size="50" name="John Doe" colors={['#ccc', '#fafafa', '#ccaabb']}/>
+      <UserAvatar size="50" name="John Doe" bgColors={['#ccc', '#fafafa', '#ccaabb']}/>
       <UserAvatar size="50" name="John Doe" />
-      <UserAvatar size="50" name="Jane Doe" color="#000" />
+      <UserAvatar size="50" name="Jane Doe" bgColor="#000" />
     </View>
     ...
 ```