Improve README.md

Author: WhiteMemory99

README.md

@@ -5,14 +5,29 @@
 <!-- Plugin description -->
 This plugin _(quite decently)_ implements inlay parameter hints for **Python**.
 
-##  Supported expressions
+## Installation
+
+- Using IDE built-in plugin system:
+
+  <kbd>Settings/Preferences</kbd> > <kbd>Plugins</kbd> > <kbd>Marketplace</kbd> >   
+  <kbd>Search for "Python Inlay Params"</kbd> > <kbd>Install Plugin</kbd>
+
+- Manually:
+
+  Download the [latest release](https://github.com/WhiteMemory99/intellij-python-inlay-params/releases/latest) and
+  install it manually using
+  <kbd>Settings/Preferences</kbd> > <kbd>Plugins</kbd> > <kbd>⚙️</kbd> > <kbd>Install plugin from disk...</kbd>
+
+## Supported expressions
 
 Pretty much any expression is supported:
+
 * dataclass and class instantiation
 * lambdas
 * decorators
 * function calls
-* etc.  
+* etc.
+
 <!-- Plugin description end -->
 
 **Look at the examples below to see how it works.**
@@ -21,7 +36,7 @@ Pretty much any expression is supported:
 
 The plugin can be disabled anytime in IDE settings:
 
-#### Settings -> Editor -> Inlay Hints -> Parameter names -> Python
+<kbd>Settings</kbd> -> <kbd>Editor</kbd> -> <kbd>Inlay Hints</kbd> -> <kbd>Parameter names</kbd> -> <kbd>Python</kbd>
 
 ## Demo Screenshots