Update README.md

Author: securedeveloper

README.md

@@ -6,7 +6,7 @@ A lightweight Excel file build API built with :heart:, powered by `JavaScript`
 [![devDependencies Status](https://david-dm.org/securedeveloper/javascript-excel/dev-status.svg)](https://david-dm.org/securedeveloper/javascript-excel?type=dev)
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 ## Installation