version number updated

0.2.1

version update

Improvements in twitter username, and descriptions

• Remove mandatory dependancies to AboutMe ~1.1.4
• Possibility to configure Twitter username via admin panel if we want to not use AboutMe
• Now use page.summary fo fill description meta-tag instead page.content

I want to thank to @clemdesign for his pull request #6 and his proposed improvements.

End Beta Test

Merge 2 request with DE and FR languages.
Fixed 'markdown syntax' in descriptions.

First public release

Ready to add in plugin directory