Update EnvironmentFile (#65)

* Change `EnvironmentFile` to match the new design of the configuration file. (#64)

README.md

@@ -24,8 +24,17 @@ Supports manual snapshots, snapper ...
 * Automatically generate `grub.cfg` if you use the provided systemd service.
 ##
 ### Installation :
+#### Arch Linux
+
+```
+pacman -S grub-btrfs
+```
+
+### Manual
+
 * Run `make install` or look into Makefile for instructions on where to put each file.
-* Generate your Grub menu after installation for the changes to take effect. (on Arch linux use `grub-mkconfig -o /boot/grub/grub.cfg`)
+
+NOTE: Generate your Grub menu after installation for the changes to take effect. (on Arch Linux use `grub-mkconfig -o /boot/grub/grub.cfg`)
 ##
 ### Customization:
 

grub-btrfs.service

@@ -6,6 +6,6 @@ Type=oneshot
 # Set the possible paths for `grub-mkconfig`
 Environment="PATH=/sbin:/bin:/usr/sbin:/usr/bin"
 # Load environment variables from the configuration
-EnvironmentFile=/etc/grub.d/41_snapshots-btrfs_config
+EnvironmentFile=/etc/default/grub-btrfs/config
 # Regenerate just '/boot/grub/grub-btrfs.cfg' if it exists and is not empty, else regenerate the whole grub menu
 ExecStart=/bin/bash -c 'if [ -s "/boot/${GRUB_BTRFS_DIRNAME:-grub}/grub-btrfs.cfg" ]; then /etc/grub.d/41_snapshots-btrfs; else ${GRUB_BTRFS_MKCONFIG:-/usr/bin/grub-mkconfig} -o /boot/${GRUB_BTRFS_DIRNAME:-grub}/grub.cfg; fi'