Update README - Align project intro to center

Author: augustoproiete

README.md

@@ -1,7 +1,14 @@
-# Serilog.Enrichers.ExcelDna [![NuGet Version](http://img.shields.io/nuget/v/Serilog.Enrichers.ExcelDna.svg?style=flat)](https://www.nuget.org/packages/Serilog.Enrichers.ExcelDna/) [![Stack Overflow](https://img.shields.io/badge/stack%20overflow-serilog-orange.svg)](http://stackoverflow.com/questions/tagged/serilog) [![Stack Overflow](https://img.shields.io/badge/stack%20overflow-excel--dna-orange.svg)](http://stackoverflow.com/questions/tagged/excel-dna)
+<h1 align="center">Serilog.Enrichers.ExcelDna</h1>
+<div align="center">
+
+[![NuGet Version](http://img.shields.io/nuget/v/Serilog.Enrichers.ExcelDna.svg?style=flat)](https://www.nuget.org/packages/Serilog.Enrichers.ExcelDna/) [![Stack Overflow](https://img.shields.io/badge/stack%20overflow-serilog-orange.svg)](http://stackoverflow.com/questions/tagged/serilog) [![Stack Overflow](https://img.shields.io/badge/stack%20overflow-excel--dna-orange.svg)](http://stackoverflow.com/questions/tagged/excel-dna)
 
 Enriches [Serilog](https://serilog.net) events with information from your [Excel-DNA](https://excel-dna.net) Add-in.
 
+![Seq showing properties from Serilog.Enrichers.ExcelDna](assets/serilog-enrichers-exceldna-nuget-seq.png)
+
+</div>
+
 ## Give a Star! :star:
 
 If you like or are using this project please give it a star. Thanks!
@@ -38,8 +45,6 @@ The package includes:
 
 In the [sample](sample/) folder, there's an example of an Excel-DNA add-in that uses Serilog for logging to the `LogDisplay` of Excel-DNA using this sink, and apply the enrichers described above.
 
-![Seq showing properties from Serilog.Enrichers.ExcelDna](assets/serilog-enrichers-exceldna-nuget-seq.png)
-
 ### Excel-DNA configuration for packing with `ExcelDnaPack`
 
 In order for the Excel-DNA enricher to work from an add-in that was packaged using the `ExcelDnaPack` utility, you need to include references to `Serilog.dll` and `Serilog.Enrichers.ExcelDna.dll` in the `.dna` file of the add-in: