OSX-KVM - October 2021 Batch Update

Changes:

- Add Makefile to improve usability (thiagokokada)

- Typo fix (cclauss)

- Update to OpenCore-0.7.4 (via Nick)

README.md

@@ -73,7 +73,7 @@ Phenom II X3 720 does not. Ryzen processors work just fine.
 
   ```
   sudo apt-get install qemu uml-utilities virt-manager git \
-      wget libguestfs-tools p7zip-full -y
+      wget libguestfs-tools p7zip-full make -y
   ```
 
   This step may need to be adapted for your Linux distribution.
@@ -84,6 +84,8 @@ Phenom II X3 720 does not. Ryzen processors work just fine.
   sudo usermod -aG kvm $(whoami)
   ```
 
+  Note: Re-login after executing this command.
+
 * Clone this repository on your QEMU system. Files from this repository are
   used in the following steps.
 
@@ -121,7 +123,7 @@ Phenom II X3 720 does not. Ryzen processors work just fine.
   ```
 
   Note: Modern NVIDIA GPUs are supported on HighSierra but not on later
-  versions.
+  versions of macOS.
 
 * Convert the downloaded `BaseSystem.dmg` file into the `BaseSystem.img` file.
 
@@ -173,6 +175,13 @@ Phenom II X3 720 does not. Ryzen processors work just fine.
     virsh --connect qemu:///system define macOS.xml
     ```
 
+  - If needed, grant necessary permissions to libvirt-qemu user,
+
+    ```
+    sudo setfacl -m u:libvirt-qemu:rx /home/$USER
+    sudo setfacl -R -m u:libvirt-qemu:rx /home/$USER/OSX-KVM
+    ```
+
   - Launch `virt-manager` and start the `macOS` virtual machine.
 
     Note: You may need to run `sudo ip link delete tap0` command before