Change default installation to stable in documentation (#6388)

* Update default installation procedure to use --stable-channel

* Small typographic fixes

* Fixing mixup with kickstart64 script

* Updated install instructions to keep nightly as default and instead warn about nightlies

* Removed extra 'the'

* Added new text for nightly vs stable

1 files changed, 8 insertions, 6 deletions

diff --git a/README.md b/README.md
index 42e4235dc7..172ca7bad9 100644
--- a/README.md
+++ b/README.md
@@ -74,22 +74,24 @@ When you install multiple Netdata, they are integrated into **one distributed ap
 *in the last 24 hours:*<br/> [![New Users Today](https://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_entries&dimensions=persons&after=-86400&options=unaligned&group=incremental-sum&label=new%20users%20today&units=null&value_color=blue&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry) [![New Machines Today](https://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_entries&dimensions=machines&group=incremental-sum&after=-86400&options=unaligned&label=servers%20added%20today&units=null&value_color=orange&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry) [![Sessions Today](https://registry.my-netdata.io/api/v1/badge.svg?chart=netdata.registry_sessions&after=-86400&group=incremental-sum&options=unaligned&label=sessions%20served%20today&units=null&value_color=yellowgreen&precision=0&v42)](https://registry.my-netdata.io/#menu_netdata_submenu_registry)
 
 ## Quick Start
+![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.requests_per_url&options=unaligned&dimensions=kickstart&group=sum&after=-3600&label=last+hour&units=installations&value_color=orange&precision=0) ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.requests_per_url&options=unaligned&dimensions=kickstart&group=sum&after=-86400&label=today&units=installations&precision=0)
 
-You can quickly install Netdata on a Linux box (physical, virtual, container, IoT) with the following command:
+To install Netdata from source on any Linux system (physical, virtual, container, IoT, edge) and keep it up to date with our **nightly releases** automatically, run the following:
 
-```sh
+```bash
 # make sure you run `bash` for your shell
 bash
 
-# install Netdata, directly from github sources
+# install Netdata directly from GitHub source
 bash <(curl -Ss https://my-netdata.io/kickstart.sh)
 ```
-![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.requests_per_url&options=unaligned&dimensions=kickstart&group=sum&after=-3600&label=last+hour&units=installations&value_color=orange&precision=0) ![](https://registry.my-netdata.io/api/v1/badge.svg?chart=web_log_nginx.requests_per_url&options=unaligned&dimensions=kickstart&group=sum&after=-86400&label=today&units=installations&precision=0)
+
+To learn more about the pros and cons of using *nightly* vs. *stable* releases, see our [notice about the two options](packaging/installer/README.md#nightly-vs-stable-releases).
 
 The above command will:
 
-1. install any required packages on your system (it will ask you to confirm before doing so),
-2. compile it, install it and start it
+- Install any required packages on your system (it will ask you to confirm before doing so)
+- Compile it, install it, and start it.
 
 More installation methods and additional options can be found at the [installation page](packaging/installer/#installation).