Update readme: remove update-grub as dependency and add g2tp link

README.md

@@ -32,7 +32,7 @@ requests.
 
 It is **strongly adviced** to put the downloaded files in some folder that will
 not get deleted, as the main script `matter.py` is needed for future grub
-updates made by your system. Also if you wan't to uninstall matter you should do
+updates made by your system. Also if you wan't to uninstall matter you could do
 it from there as well.
 
 ## Dependencies
@@ -41,11 +41,11 @@ Matter will inform you of any missing dependencies, but here is a list anyways:
 
 - `inkscape` (**Main dependency**): This brings the `convert` command from
   `imagemagick` with best svg to png conversion.
-- `update-grub`, `grub-mkconfig`, and `grub-mkfont`: General grub utilities
-  needed, if you don't have these, please create an issue with more information
-  about your system as I've only worked on systems that have these commands.
-- `grub2-theme-preview` (Optional): For testing results (`--test/-t` argument)
-  without rebooting.
+- `grub-mkconfig` and `grub-mkfont`: General grub utilities needed, if you
+  don't have these, please create an issue with more information about your
+  system as I've only worked with ones that have these commands.
+- [`grub2-theme-preview`](https://github.com/hartwork/grub2-theme-preview)
+  (Optional): For testing results (`--test/-t` argument) without rebooting.
 
 # Usage