Added yarn package manager

tangledbytes · web-flow · commit d02f3641872a · 2019-11-20T09:57:51.000+05:30
diff --git a/README.md b/README.md
@@ -15,6 +15,7 @@ The ID generator produces ids faster if the return type is bigint, but this opti
 
 ```
 npm install nodejs-snowflake --save
+yarn add nodejs-snowflake
 ```
 
 ## Usage
