diff --git a/README.md b/README.md
index 95c454f..d5c51ab 100644
--- a/README.md
+++ b/README.md
@@ -1,16 +1,72 @@
-# Alternative icon for Polymail.app
+Overview
+========
+
+Alternative icon for [Polymail.app](https://polymail.io).
 
 ![Polymail.icns](https://raw.github.com/Greenek/polymail.icns/master/preview.png)
 
-## Installation
+Installation methods
+====================
+
+Quick
+-----
+
+> **NOTE:** Xcode Command Line Tools are required for that method: `xcode-select --install`.
+
+1. Run in Terminal:
+
+  ```
+  curl -s https://raw.githubusercontent.com/Greenek/polymail.icns/master/install.sh | bash
+  ```
+
+Normal
+------
+
+1. Download latest version of [Polymail.icns](https://raw.githubusercontent.com/Greenek/polymail.icns/master/Polymail.icns).
+2. Quit `Polymail.app`.
+3. Go to `/Applications/` folder.
+4. Select `Polymail.app` icon and press <kbd>⌘</kbd> + <kbd>I</kbd> or select `Get Info` from right-click menu.
+5. Drag `Polymail.icns` onto it's icon at the top left of the info window.
+6. Launch the application. New icon should be now visible in the dock.
+
+From scratch
+------------
+
+#### Requirements
+
+ * Xcode Command Line Tools (`xcode-select --install`)
+
+ * Inkscape (`brew cask install inkscape`)
+
+#### Install
+
+1. Download or clone the repository.
+2. Run in Terminal:
+```
+make
+```
+
+Troubleshooting
+===============
+
+If you cannot solve your issues please file a [bug report](https://github.com/Greenek/polymail.icns/issues/new).
+
+After successful installation old icon is still visible at the Dock.
+----------------------------------------------
+
+There are two methods to fix this:
+
+1. Restart application
+
+2. or run in Terminal:
 
-- Download and extract latest version of [Polymail.icns](https://github.com/Greenek/polymail.icns/releases/download/v1.0.0/Polymail.icns)
-- Quit `Polymail.app`.
-- Go to `/Applications/` folder.
-- Select `Polymail.app` icon and press <kbd>Cmd</kbd>+<kbd>I</kbd> or select `Get Info` from right-click menu.
-- Drag `Polymail.icns` onto it's icon at the top left of the info window.
-- Launch the application. New icon should be now visible in the dock.
+  ```
+  sudo find /private/var/folders/ -name com.apple.dock.iconcache -exec rm {} \;
+  sudo find /private/var/folders -name com.apple.iconservices -exec rm -rf {} \;
+  killall Dock
+  ```
 
-## Author
+Author
+======
 
 Paweł Golonko, [greenek.com](http://greenek.com)