v1.0-hotfix (#2)

* [Bug] Script Path Fix
`cloudflare-ddns` needs to be imported using absolute path, fixed.

* [Doc] Documentation Update
README - Usage Section.

README.md

@@ -1,18 +1,50 @@
 # Cloudflare DDNS Script for EdgeOS
 
-It's originally designed for my Ubiquiti ER-X router to support dynamic domain update on Cloudflare. 
+Designed for my Ubiquiti ER-X router to support dynamic domain update (ddns) on Cloudflare. 
 
-`cron` or `ppp-up` the script to achieve ddns.
+## Usage
 
-## Scripts Usage
+### 1 - Download
 
-+ Alter specific section of `cfddns.sh`.
+> Suppose you have already ssh into your EdgeOS based router, in my case, Ubiquiti ER-X.
 
-+ `chmod +x ./cfddns.sh`
+#### 1.1 Using Github Raw
 
-+ try execute `./cfddns.sh`
+```bash
+cd /config/scripts/ && pwd
+# /config/scripts/
+
+curl -LS -o /config/scripts/cloudflare-ddns-edgeos.tar.gz https://github.com/MijazzChan/cloudflare-ddns-edgeos/raw/releases/cloudflare-ddns-edgeos.tar.gz
+```
+
+#### 1.2 Trouble with GFW?
+
+```bash
+cd /config/scripts/ && pwd
+# /config/scripts/
+
+curl -LS -o /config/scripts/cloudflare-ddns-edgeos.tar.gz https://cdn.jsdelivr.net/gh/MijazzChan/cloudflare-ddns-edgeos@releases/cloudflare-ddns-edgeos.tar.gz
+```
+
+### 2 - Deploy
+
++ `tar -xvf /config/scripts/cloudflare-ddns-edgeos.tar.gz`
+
++ Alter variables in `/config/scripts/cloudflare-ddns-edgeos/cfddns.sh`.
+
++ `+x` to files using `chmod +x /config/scripts/cloudflare-ddns-edgeos/cfddns.sh`
+
+### 3 - Test 
+
+Before you set it as a scheduled task, execute it first. 
+```bash
+/config/scripts/cloudflare-ddns-edgeos/cfddns.sh
+```
+If it updates your domain record **both successfully and correctly**, proceed to next step. 
+
+**Otherwise**, feel free to [open a issue](https://github.com/MijazzChan/cloudflare-ddns-edgeos/issues/new)
 
-## Using `edgeos`'s task-scheduler to cron
+### 4 - Using `task-scheduler` to `cron` it
 
 ```bash
 configure
@@ -25,3 +57,31 @@ save
 exit
 ```
 
+## About
+
+EdgeOS somehow didn't support ddns on cloudflare, at least not an option in their web-ui. You need to configure it under cli.
+
+Besides, it communicates with cloudflare through v1 api (currently v4 is actively supported & maintained by cf). 
+
+Thus...this project.
+
+
+## Release/Feature History
+
+### v1.0-hotfix
+
++ Fix script import error. (MUST use absolute path to import `cloudflare-ddns`)
+
++ Update usage documentation.
+
+### v1.0
+
++ Initial release, test passed on er-x.
+
+## License
+
+Copyright © 2022 MijazzChan <mijazz@qq.com>
+
+This work is free. You can redistribute it and/or modify it under the
+terms of the Do What The Fuck You Want To Public License, Version 2,
+as published by Sam Hocevar. See http://www.wtfpl.net/ for more details.

cfddns.sh

@@ -2,7 +2,8 @@
 
 
 # Import utility function here
-. ./cloudflare-ddns
+# You `cloudflare-ddns` file ABSOLUTE PATH here!
+. /config/scripts/cloudflare-ddns-edgeos/cloudflare-ddns
 
 ########
 # Alter here