update installation section (#9)

nick-zh · web-flow · commit 1fce4818f504 · 2021-10-29T08:42:40.000+02:00
diff --git a/README.md b/README.md
@@ -7,7 +7,7 @@
 
 ## Installation
 ```
-composer require php-kafka/php-avro-schema-generator "^0.1.0"
+composer require php-kafka/php-avro-schema-generator "^1.0"
 ```
 
 ## Description
