Update README.md

Author: hello-smile6

README.md

@@ -8,4 +8,10 @@ npm i --save SpellCheckJS/nodejs-client
 ```javascript
 const spellcheck=require("SpellCheckJS");
 console.log(spellcheck.applyCorrections("the witdh of malpe leaves is hard to guess"));
+if(spellcheck.isCorrectlySpelled("'Width' is easy to spell. How could you mess that up? You'd be surprised.")) {
+  console.log("Yay");
+}
+else {
+  throw new Error("Uh-oh. :(");
+}
 ```