Update README

Jiyuan-Bolt · web-flow · commit 84bc4bc3c932 · 2020-05-01T00:19:29.000-04:00
diff --git a/README.md b/README.md
@@ -4,5 +4,5 @@ Official PHP library to interact with Bolt [APIs](https://docs.bolt.com/referenc
 
 ### Requirements
 
-PHP 5.4+
+PHP 5.6+
 

Original file line number	Diff line number	Diff line change
`@@ -4,5 +4,5 @@ Official PHP library to interact with Bolt [APIs](https://docs.bolt.com/referenc`
`4`	`4`
`5`	`5`	`### Requirements`
`6`	`6`
`7`		`-PHP 5.4+`
	`7`	`+PHP 5.6+`
`8`	`8`