Added additional installation instructions.

README.rst

@@ -46,6 +46,20 @@ You will need Python 3.7 - 3.10 (64-bit) as well as
 Linux/macOS
 ~~~~~~~~~~~
 
+You will need to install some additional dependencies on Linux and macOS.
+Primarily CMake, and Boost.
+
+On Ubuntu/Debian you can install these dependencies by running:
+.. code-block:: bash
+
+   sudo apt-get install cmake libboost-all-dev
+
+On macOS you can install them using Homewbrew by running:
+
+.. code-block:: bash
+
+   brew install cmake boost
+
 .. _linux-macos-install-pip:
 
 Install using pip
@@ -58,6 +72,14 @@ Install using pip
    # or run the following if you already have camel_tools installed
    pip install camel-tools --upgrade
 
+On Apple silicon Macs you may have to run the following instead:
+
+.. code-block:: bash
+
+   CMAKE_OSX_ARCHITECTURES=arm64 pip install camel-tools
+
+   # or run the following if you already have camel_tools installed
+   CMAKE_OSX_ARCHITECTURES=arm64 pip install camel-tools --upgrade
 
 .. _linux-macos-install-source: