Linking Tutorial Pages to Their Github Source Page

[boubascript]

To make contributing to tutorials easier, it would be nice to be able to go directly from a tutorial page to the file on github that it is generated from. For example, going from Finding contours in your image to find_contours.markdown is slightly complicated because the file is under shapedescriptors, which you can't tell from the way the tutorials are organized on the docs site.

A possible approach to this I tested out was adding an alias to the DoxyFile and then running a shell command that adds a line to the end of every tutorial markdown file using that alias.

For instance the alias:
github_source{1}="[View on Github (https://github.com/opencv/opencv/blob/master/doc/\1)"

With the following BSD command on a mac:
find tutorials js_tutorials py_tutorials -name "*.markdown" -exec sh -c 'printf "\n@github_source{"$0"}" >> "$0"' {} \;

The command/alias can definitely be improved, but I wanted to see if something like this would be accepted, and receive any feedback on better ways to automate this process moving forward.