Update README.md

Author: codingseb

README.md

@@ -4,6 +4,13 @@ Some tools for using C# Regex in Notepad++ (As Notepad++ Plugin)
 Need a [Notepad++](https://notepad-plus-plus.org/) x86 or x64 installed on the machine and the right to write in the plugin directory.
 (At least version 7.6.3, older versions can work but need modification of the file [NppPlugin.DllExport.targets](https://github.com/codingseb/CSharpRegexTools4Npp/blob/master/CSharpRegexTools4Npp/PluginInfrastructure/DllExport/NppPlugin.DllExport.targets))
 
+## Installation
+
+* Clone this repo
+* Give write access to %NOTEPAD++Root%\plugins directory
+* Launch CSharpRegexTools4Npp.sln in Visual Studio
+* Select the target platform x86 or x64 depending on your version of Notepad++
+* Compile and launch (F5) (It will copy the plugin in the right place and launch Notepad++)
 
 ## Credits
 Based on : [NotepadPlusPlusPluginPack](https://github.com/kbilsted/NotepadPlusPlusPluginPack.Net) (under the [Apache-2.0 license](https://github.com/kbilsted/NotepadPlusPlusPluginPack.Net/blob/master/LICENSE.md))