Increase version in README.

Ethan Bray · Ethan Bray · commit eb15c9e6c334 · 2019-10-07T16:42:38.000+01:00
diff --git a/README.md b/README.md
@@ -8,7 +8,7 @@ The PHP coding standard for MessageCloud.
 ```json
 {
   "require-dev": {
-    "messagecloud/messagecloud-coding-standard": "^1.0"
+    "messagecloud/messagecloud-coding-standard": "^3.0"
   }
 }
 ```

Original file line number	Diff line number	Diff line change
`@@ -8,7 +8,7 @@ The PHP coding standard for MessageCloud.`
`8`	`8`	```json
`9`	`9`	`{`
`10`	`10`	`"require-dev": {`
`11`		`- "messagecloud/messagecloud-coding-standard": "^1.0"`
	`11`	`+ "messagecloud/messagecloud-coding-standard": "^3.0"`
`12`	`12`	`}`
`13`	`13`	`}`
`14`	`14`	```