From 53828d9e77273cd34bd2d7818237e41264ae2419 Mon Sep 17 00:00:00 2001
From: Racoonicorn <Racoonicorn@users.noreply.github.com>
Date: Wed, 14 Dec 2016 21:29:41 +0100
Subject: [PATCH] Fix typo

---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 442e995..2c7cffd 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Arithmetic Derivative
 
-Arithmetic derivative calculator using this simple formulas:
+An arithmetic derivative calculator that uses these simple formulas:
 * 0' = 1' = 0;
 * if n is a prime, n' = 1;
 * if n = ab  (a and b > 1), n' = a'b + ab'