setup updated

docs/C-Lightning-setup.md

@@ -2,6 +2,7 @@ RTL C-lightning setup
 
 * [Introduction](#intro)
 * [Pre-requisite](#prereq)
+* [Architecture](#arch)
 * [Installation](#install)
 * [Prep for execution](#prep)
 * [Start the server and access the app](#start)
@@ -18,6 +19,9 @@ Follow the below steps to install and setup RTL to run on c-lightning.
 3. Cl-Rest - Ensure that `cl-rest` API server is installed and running. Install instructions [here](https://github.com/saubyk/c-lightning-REST/blob/master/README.md)
 4. Copy the `access.macaroon` file from `cl-rest` to the device, on which RTL will be installed
 
+### <a name="arch"></a>Architecture
+![](screenshots/RTL-C-lightning-Arch.png)
+
 ### <a name="install"></a>Installation:
 #### First time setup
 * Fetch sources from RTL git repository, by executing the below on the command prompt:
@@ -96,4 +100,4 @@ If the server started successfully, you should get the below output on the conso
 Open your browser at the following address: http://localhost:3000 to access the RTL app.
 
 ### Detailed config and instructions
-For detailed config and access options and other information, view the main readme page.
+For detailed config and access options and other information, view the main readme page.