Merge pull request #12 from colombod/master

modified ignore file (.DS_Store)
Improved the structure of the comments and their content.

* Moved function documentation to multiline comments.
* More information on what the most important lines do (source: datasheet).
* Spaces and Tabs where unified.
Merge pull request #13 from pklaus/code-comments

Improved the structure of the comments and their content.