corrected input/output syntax for API examples

Author: neocotic

README.md

@@ -109,15 +109,15 @@ Unicode escape characters not in the ASCII character set so that they can be saf
 const native2ascii = require('node-native2ascii');
 
 native2ascii('I ♥ native2ascii!');
-//=> "I \u2665 native2ascii!"
+//=> "I \\u2665 native2ascii!"
 ```
 
 These can be later unescaped by reversing the operation:
 
 ``` javascript
 const native2ascii = require('node-native2ascii');
 
-native2ascii('I \u2665 native2ascii!', { reverse: true });
+native2ascii('I \\u2665 native2ascii!', { reverse: true });
 //=> "I ♥ native2ascii!"
 ```