Update documentation

documentation/install.rst

@@ -3,7 +3,18 @@ Installation
 **Binder** is written in C++11 and must be built before use. This page describes the steps for the build process.
 Please note that installation require up to ~2.6+ Gb of free disk space.
 
+Install pre-built wheels from PyPI
+**********************************
 
+The easiest way to install Binder is to use pre-built wheels from PyPI. To install Binder, run:
+
+.. code-block:: bash
+
+    pip install cppbinder
+
+This will install the latest version of Binder and its dependencies.
+
+To build Binder from source, follow the instructions below.
 
 Requirements
 ************