Doc generator

Hi

Here is my doc generator proposition.

The website is managed by Travis.
The __secure token__ in `.travis.yml` must be changed to make it works. More information [here](http://sleepycoders.blogspot.se/2013/03/sharing-travis-ci-generated-files.html).
And an orphan branch must be created
```
git checkout --orphan gh-pages
```


There is still work to do. 
- `mask` have no doc 
- `reset` and `scrollfix` have a strange behavior (something is missing ??)