Add info about published plugin

projector-plugin/README.md

@@ -1,11 +1,21 @@
 # projector-plugin
+
 This subproject is an IntelliJ plugin for sharing the IDE window using the Projector server.
 
 Please note that it's an experimental technology.
 
 If you want simultaneous collaborative editing, please try [Code With Me](https://www.jetbrains.com/help/idea/code-with-me.html) solution.
 Projector doesn't support that.
 
+## Downloading from Plugins Marketplace
+
+The plugin is published here: <https://plugins.jetbrains.com/plugin/16015-projector>. So you can find it in IDE and install it (manual IDE
+restart is needed after installation).
+
+## Usage
+
+New menu item `Projector` will appear next to the `Help` in the title bar.
+
 ## Building from sources
 
 This will give you a zip file with IntelliJ plugin:
@@ -16,12 +26,11 @@ This will give you a zip file with IntelliJ plugin:
 
 This command creates a zip file in the `projector-plugin/build/distributions` dir.
 
-## Downloading
+## Downloading zip file from releases
 
 Alternatively, you can download the zip file from [releases](https://github.com/JetBrains/projector-server/releases/). Please search for the
 latest release starting with `agent-...` and find the plugin in Assets there.
 
-## Usage
+## Installing zip file
 
-Install the plugin (the zip file) into IntelliJ IDEA via `Gear Icon | Install plugin from disk...` menu item in Plugins settings. New menu
-item `Projector` will appear next to the `Help` in the title bar.
+Install the plugin (the zip file) into IntelliJ-based IDE via `Gear Icon | Install plugin from disk...` menu item in Plugins settings.