Update README.md

README.md

 # Realtime Kernel for Ubuntu 18.4
 
+⚠ this repository uses git-lfs. when cloning, make sure LFS is installed locally.
+
 These are deb packages built for Ubuntu Bionic.
 
 Used Kernel sources:
@@ -9,3 +11,28 @@ Used Kernel sources:
 Kernel config:
 - Preemption Model: Fully Preemptible Kernel (RT)
 
+## Installation
+
+- simply install the packages using `dpkg -i`
+
+## Verifying that the Realtime Kernel is Running
+
+- reboot after kernel installation, selecting the new kernel in Grub
+- run `uname -a`, the result should contains `PREEMPT RT`
+
+## Set User Permissions
+
+- add a group named realtime and add the user controlling your robot to this group:
+    ```
+    sudo addgroup realtime
+    sudo usermod -a -G realtime $(whoami)
+    ```
+- add the following limits to the realtime group in /etc/security/limits.conf:
+    ```
+    @realtime soft rtprio 99
+    @realtime soft priority 99
+    @realtime soft memlock 102400
+    @realtime hard rtprio 99
+    @realtime hard priority 99
+    @realtime hard memlock 102400
+    ```