Update README

README.md

@@ -1,2 +1,19 @@
-# Cisco-IOS-XR
-Syntax Highlighting for Cisco IOS XR Commands in NotePad++
+# Cisco IOS XR Commands Syntax Highlighting
+
+<br />
+
+![Cisco Logo](cisco-logo.png)
+
+<br />
+
+After Installing [NotePad++](https://notepad-plus-plus.org/downloads/), place the `xml` file within `%AppData%\Notepad++\userDefineLangs`, and restart NotePad++.
+
+Files with extensions `.cisco`, `.ios`, `.xr`, `.log`, and `.txt` will automatically use this UDL as their default language.
+
+To change this behavior, edit `Cisco_IOS_XR_byOsamaAbbas.udl.xml` file at the following line, remove `txt` from `ext` property, and restart NotePad++.
+
+```xml
+<UserLang name="Cisco IOS XR" ext="cisco ios xr log txt" udlVersion="1.0">
+```
+
+> This is an enhanced version of the UDL made by LuisPisco. His UDL can be found [here](https://github.com/notepad-plus-plus/userDefinedLanguages/blob/master/UDLs/Cisco_IOS_byLuisPisco.xml).