Added a README to doc on how to generate documentation with doxygen. In main...

Added a README to doc on how to generate documentation with doxygen. In main README, added a mention to check the REAME in doc.

README

@@ -14,6 +14,10 @@ http://qgroundcontrol.org/credits
 * PLEASE NOTE: YOU NEED TO DOWNLOAD THE MAVLINK LIBRARY IN ORDER TO COMPILE THIS APPLICATION *
 **********************************************************************************************
 
+Documentation
+=============
+For gernerating documentation, refer to README in the doc directory.
+
 
 Mac OS X
 ========
@@ -99,4 +103,3 @@ Windows XP/7:
 
 6) Compile and edit in Visual Studio. If you need to add new files, add them to qgroundcontrol.pro and re-run `qmake -tp vc qgroundcontrol.pro`
 
-

doc/README

+Linux/Mac OS X
+==============
+To install doxygen: 
+$sudo apt-get install doxygen
+
+If the above does not work go to:
+http://www.stack.nl/~dimitri/doxygen/download.html for the correct download.
+
+Then go to the following website for inforamtion on the install:
+http://www.stack.nl/~dimitri/doxygen/install.html
+
+Then to generate the html, run the following code while you are in the qgroundcontrol/doc directory:
+$doxygen Doxyfile
+
+The html file index.html should be in doc/html unless you chenged the output directory. 
+
+The other option for generating the documentation is to use the wizard:
+$doxywizard &
+
+doxywizard information:
+http://www.stack.nl/~dimitri/doxygen/doxywizard_usage.html
+
+Or go to the Doxygen Manual for information.
+
+Windows
+=======
+Go to the following website for the correct download and follow the wizard to install:
+http://www.stack.nl/~dimitri/doxygen/download.html
+
+Run the wizard to generate the documentation. 
+Go to the website below or the Doxygen Manual for information on running doxywizard
+http://www.stack.nl/~dimitri/doxygen/doxywizard_usage.html
+
+doxygen Manual
+==============
+http://www.stack.nl/~dimitri/doxygen/
+