Update README.md

Author: patrikjuvonen

README.md

@@ -11,7 +11,7 @@ See the [official wiki page](https://wiki.multitheftauto.com/wiki/PHP_SDK) for f
 
 ### Prerequisites
 
-This SDK requires PHP 7.1 or greater.
+This SDK requires PHP 7.3 or greater.
 
 ### HTTPlug client abstraction
 
@@ -85,4 +85,4 @@ To run all unit tests you can use:
 
 To run specific unit test you can use --filter option:
 
-    $ dcli phpunit --filter=ClassName::MethodName
+    $ dcli phpunit --filter=ClassName::MethodName