Updated Readme

README.md

@@ -1,5 +1,50 @@
 # IGEL-OS-APP-SDK
 
-Building Your Own IGEL OS App with igelpkg.
-
 [Getting Started with the IGEL OS App SDK](utils/Getting-Started-with-the-IGEL-OS-App-SDK.pdf)
+
+-----
+
+-----
+
+## Getting Started With the IGEL OS App SDK
+
+This document provides you with the basic knowledge that is required to create an IGEL OS App with igelpkg and publish it on the IGEL App Portal.
+
+Basically, the procedure is as follows:
+
+- Install the IGEL OS App SDK on a Linux system.
+- Build and test your app.
+- Make sure that your app meets the requirements of the review by IGEL.
+- Submit your app for review
+
+-----
+
+## Prerequisites
+
+- Machine with Ubuntu Linux 18.04 or higher, or another Debian-based Linux distribution
+- The IGEL OS APP SDK, version 0.9.8 or higher
+- Device with IGEL OS 12.01.120. To test if the app can be installed and started, a virtual machine is sufficient. If 3D graphics are required, a hardware device might be a good choice. To test if an app can be installed and started, a virtual machine is sufficient.
+- A local terminal is configured on the device
+
+-----
+
+## Installing igelpkg
+
+- Copy the files igel-build-tools-static[version]_amd64.deb and igelpkg_[version]_amd64.deb to your development machine.
+- Go to the directory that contains the files and enter the following command:
+
+```bash linenums="1"
+sudo apt install ./igel-build-tools-static[version]_amd64.deb igelpkg_[version]_amd64.deb
+```
+
+- To show the general help, enter
+
+```bash linenums="1"
+igelpkg --help
+```
+
+- To get help for a specific module, enter the module's name and then --help, for instance:
+
+```bash linenums="1"
+igelpkg build --help
+```