Add an example for the buffered EEPROM access

[hasenbanck]

Just a simple example for the new, buffered EEPROM API.

[fpistm]

Hi @hasenbanck ,
Could you also refresh your fork, I've removing a PR merged for STM8 arch which should never be in this library.
Then I will be able to merge our example.
Thanks in advance, sorry for this mistake.

[hasenbanck]

You changed the history of the repository? That's pretty much a no-go when working with GIT (at least when working with the master). It's best practice to never break the history for other people. If you want to revert changes, it's much better to revert those changes with a commit (git revert). That way you don't break the history. /rant

I will rebase the changes and use println() as you have requested.

[fpistm]

I know, it's not my WOW anyway in that case I really want removed all reference to this which was merged by mistake.

[hasenbanck]

@fpistm I rebased the PR and added your requested changes.