[PATCH v3 3/4] Mention pylibfdt in the documentation

[Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>]

Add a note about pylibfdt in the README.

Signed-off-by: Simon Glass <sjg-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
---

Changes in v3: None
Changes in v2:
- Add details on how to obtain full help and code coverage

 README | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/README b/README
index f92008f..7191d1b 100644
--- a/README
+++ b/README
@@ -7,6 +7,39 @@ DTC and LIBFDT are maintained by:
 David Gibson <david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org>
 Jon Loeliger <jdl-CYoMK+44s/E@public.gmane.org>
 
+
+Python library
+--------------
+
+A Python library is also available. To build this you will need to install
+swig and Python development files. On Debian distributions:
+
+   sudo apt-get install swig python-dev
+
+The library provides an Fdt class which you can use like this:
+
+    fdt = _ReadFdt('test_tree1.dtb')
+    node = fdt.path_offset('/test-node')
+    prop = fdt.first_property_offset(node)
+    print 'Property name: %s' % fdt.string(prop.nameoff)
+    print 'Property data: %s' % fdt.data(prop.nameoff)
+
+You will find tests in tests/pylibfdt_tests.py showing how to use each
+method. Help is available using the Python help command, e.g.:
+
+    $ cd pylibfdt
+    $ python -c "import libfdt; help(libfdt)"
+
+If you add new features, please check code coverage:
+
+    $ sudo apt-get install python-pip python-pytest
+    $ sudo pip install coverage
+    $ cd tests
+    $ coverage run pylibfdt_tests.py
+    $ coverage html
+    # Open 'htmlcov/index.html' in your browser
+
+
 Mailing list
 ------------
 The following list is for discussion about dtc and libfdt implementation
-- 
2.8.0.rc3.226.g39d4020