feat(resources) add http-project-guide

src/content/resources/topic/projects/http-project-guide/chapter-13.md

@@ -0,0 +1,39 @@
+---
+authors:
+  - "Kibb#4205"
+created_at: 2020/06/08
+title: "Chapter 12: Config"
+---
+
+## Chapter 12: Config.
+
+For the time being we have been hard coding all the various values like the port and the web directory, 
+its about time we made this configurable.
+
+Lets create a config file that we can set the port and the host in. Lets say this config file is called `config` 
+and can contain any format you want. YAML, JSON, INI, Plain text; whatever suits you and your language. 
+
+For these examples we will use YAML but they are all similar
+
+```yaml
+host: localhost
+port: 9985
+web_directory: ./www
+```
+
+Lets update the program to read the values from config and use those.
+
+The whole point of making it configurable is the person deploying this in the future doesn't want to edit code or 
+change values in your program to get it to work to their usecase. So by providing a way to configure your application 
+it makes it more portable and usable in different situations.
+
+This should be quite an easy chapter but its a reasonably important one. 
+
+## Goals
+
+- Replace any hard coded values with values set in a config file.
+
+## Bonus goals
+
+- Provide sane defaults if the values are missing
+- Add your own config values.