Add targets to build documentation with instructions.

Change-Id: I037ab5d94e17147aba998131e92c1ec920293fa9
Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>

1 files changed, 40 insertions, 2 deletions

diff --git a/README.md b/README.md
index f346327..bcf9981 100644
--- a/README.md
+++ b/README.md
@@ -3,9 +3,47 @@
 Low level CAN bus binder, based upon OpenXC vi-firmware project.
 
 Full document can be found under `docs` directory.
-Note that your can use gitbook to serve documentation:
+
+# Generate documentation
+
+## Prerequisites
+
+You can use gitbook to serve documentation. To do so, please install it using *npm* as well as *calibre* package from your package distribution manager:
+
+```bash
+sudo npm install -g gitbook-cli
+sudo apt-get install calibre
+```
+
+To generate Doxygen documentation, you'll need doxygen and graphviz:
+
+```bash
+sudo apt-get doxygen graphviz
 ```
+
+Prepare your build environment:
+
+```bash
 mkdir build && cd build
 cmake ..
-make serve-docs
+```
+
+## Generation
+
+Generate a PDF version :
+
+```bash
+make pdf
+```
+
+Serve an HTML version, this will run a web server that will serve you locally documentation :
+
+```bash
+make serve
+```
+
+Generate doxygen documentation:
+
+```bash
+make doxygen
 ```
\ No newline at end of file