Updated readme with install and config sections

README.md

@@ -1,10 +1,38 @@
 # Alpine Chroot
 
+
+### Installation
+
 To create a base alpine chroot on any alpine system, run:
 
 ```sh
 chmod +x *.sh
 ./alpine_init.sh
 ```
+But this is assuming your current working directory is the directory of the
+cloned repository.
 
-Assuming your current working directory is the directory of the cloned repository.
+When it is your first time in the chroot, run:
+
+```sh
+./chroot_init.sh
+```
+
+
+### Usage
+
+Most people will go "into" the chroot via:
+
+```sh
+chroot /mnt/chroot sh
+```
+
+But you must remember that you can just as well run any program in the chroot
+as:
+
+```sh
+chroot /mnt/chroot <program>
+```
+
+Because **chroots are not jails, containers, or sandboxes**. They simply change
+what the system sees as the "root" point of the file system.