Add documentation for cmake build / install / uninstall

README.md

@@ -97,6 +97,18 @@ git clone https://github.com/seladb/PcapPlusPlus.git
 
 Follow the build instructions according to your platform in the [Build From Source](https://pcapplusplus.github.io/docs/install#build-from-source) page in PcapPlusPlus web-site.
 
+**Using CMake**
+
+```sh
+# build and install using compiler of your choice (for example, clang here)
+CC=clang CXX=clang++ cmake -Bbuild && cmake --build build -j$(nproc) && cmake --install build --prefix /prefix/path
+```
+
+```sh
+# uninstall
+cmake --build build --target uninstall
+```
+
 ## Feature Overview
 
 - __Packet capture__ through an easy to use C++ wrapper for popular packet capture engines such as [libpcap](https://www.tcpdump.org/), [WinPcap](https://www.winpcap.org/), [Npcap](https://nmap.org/npcap/), [Intel DPDK](https://www.dpdk.org/), [ntop’s PF_RING](https://www.ntop.org/products/packet-capture/pf_ring/) and [raw sockets](https://en.wikipedia.org/wiki/Network_socket#Raw_socket) [[Learn more](https://pcapplusplus.github.io/docs/features#packet-capture)]