Document the Python bindings using Sphinx

Additionally, setup the documentation for
deployment to Read The Docs.

python/docs/index.rst

@@ -0,0 +1,51 @@
+Welcome to libcpuid's documentation!
+====================================
+
+**libcpuid** provides a Python interface
+to the libcpuid C library.
+
+.. code-block:: python
+
+   import sys
+   import libcpuid
+   from libcpuid.errors import LibcpuidError
+   from libcpuid.info import CPUInfo
+   from libcpuid.enums import CPUFeature, CPUVendor
+
+   # print the version of the libcpuid library
+   print(libcpuid.version())
+
+   # print the number of CPU cores
+   print(libcpuid.get_total_cpus())
+
+   # check if the cpuid instruction is available
+   if not libcpuid.cpuid_present():
+      print("CPUInfo instruction is not available")
+      sys.exit(1)
+
+   try:
+      # identify the current CPU and print some
+      # information about it
+      cpu_info = CPUInfo.from_current_cpu()
+      print(cpu_info.vendor)
+      print(cpu_info.architecture)
+      print(CPUFeature.FPU in cpu_info.features)
+
+      # print the list of all Intel CPU code names
+      print(libcpuid.get_cpu_list(CPUVendor.INTEL))
+   except LibcpuidError as err:
+      print(err.message)
+      sys.exit(1)
+
+
+.. toctree::
+   :maxdepth: 2
+
+   Home <self>
+   api/libcpuid
+   api/info
+   api/msr
+   api/enums
+   api/raw
+   api/clock
+   api/errors