Add more documentation in the README file

README.md

@@ -1,8 +1,35 @@
-# HelixCoreServerPackage
+# Helix Core Server Package for Synology
 
 Perforce Helix is a full-featured VCS that scales to thousands of users and millions of files, which allows you to maintain software source code, documents, or any type of file.
 
-## To create a Perforce server:
+
+## Requirements
+
+- DSM >= 7.0
+- Synology NAS with a x86_64 processor
+
+## Downloading the package
+
+Download the .spk package corresponding to your NAS in [the Releases page](https://github.com/FrozenStormInteractive/Perforce-Synology/releases).
+
+Packages have names containing the information you need to choose which one to install:
+```
+HelixCoreServer-<Perforce server version>-<Package version number>-<Processor architecture>-<DSM version>.spk 
+```
+
+For example, the package with number 0025 containing P4D 23.1 for Synology NAS with x86_64 processor and DSM 7.1 has the name `HelixCoreServer-23.1-0025-x86_64-7.1.spk`.
+
+## Installing the package
+
+- Go to the DSM Package Center
+- At the top left of the Package Center window, next to the search bar, click on the "Manual install" button.
+- Select the spk file you have downloaded
+- Follow the instruction of the installer
+You msut create a perforce server now.
+
+Once installed, you need to create a Perforce server.
+
+## How to create a Perforce server:
 1. Sign in to DSM using an account with administrative privileges.
 1. Go to **Control Panel** > **Terminal & SNMP** > **Terminal** then enable **SSH service**.
 1. (Optional) Go to **Control Panel** > **Shared Folder** and create a shared folder for Helix Core server repositories.
@@ -27,3 +54,13 @@ Perforce Helix is a full-featured VCS that scales to thousands of users and mill
    ```
    sudo -u Perforce p4dctl-ng new
    ```
+
+## Upgrading the package
+
+- Download the newest version in [the Releases page](https://github.com/FrozenStormInteractive/Perforce-Synology/releases). 
+
+  :warning: You must take a package with a higher perforce server version than your current one, or a higher package number than your current one. The perforce server is not backward-compatible.
+- Go to the DSM Package Center
+- At the top left of the Package Center window, next to the search bar, click on the "Manual install" button.
+- Select the spk file you have downloaded
+- Follow the instruction of the installer.