Update README.md

README.md

@@ -4,7 +4,7 @@
 If you need to evaluate a formula with basic operators and variables, and
 
 * **No eval:** You dont want to use EVAL for obvious security reasons,
-* **No dependancies:** You don't want to rely on half the internet as dependancies, but prefer a single self-contained class,
+* **No dependencies:** You don't want to rely on half the internet as dependencies, but prefer a single self-contained class,
 * **Old PHP OK:** You don't necessarily have the latest PHP version, or Composer,
 * **No spaghetti:** You want something readable that you could easily understand and customize,
 * **Arithmetic rules OK:** You need something that knows about operators priority, unary operators, and parenthesis,