update document

dongyuwei · dongyuwei · commit ad29fb0121b5 · 2019-05-20T15:32:16.000+08:00
diff --git a/README.md b/README.md
@@ -2,6 +2,12 @@
 
 Built by react-native.
 
+### features
+
+1. instant translate english to chinese when typing
+2. instant spell-check when typing
+3. show IPA of inputed word
+
 ### android dev
 
 `yarn run-android`
