moved directories to comply with Wordpress guidelines
Added button preview in plugin settings
Added parameters for text, border and background color change on mouse-over
Added customizable button text

1. Text on the button is customizable now.

2. The button width changes to fit the text length. (Character limit and input validation remains to be implemented.

3. Options related to mouse-over are sanitized now.
Added missing style elements to the button
All styles moved into a separate css file
Settings survive activations/deactivations, and get purged only on plugin removal
If in excerpt, do not include button code into $content.
Merge pull request #14 from ciubotaru/button-css

Merging button-css into unstable
resolving conflict between og-description an unstable
Merge branch 'unstable' of https://github.com/ciubotaru/share-on-diaspora into unstable
Update README.md
Added a screenshot of the settings page, and its description in readme.txt
cleaned of new features, only bugfixes for this release