add share buttons

[jeromeetienne]

• add share button on all page
• add the thumbnail which gonna be included in gplus and other like facebook
  • the usual avatar you put everywhere
• which link to share and with which text
• always the first page ? or each page is specific
  • always the same page, with the same text. for simplicity sake

[jeromeetienne]

Result

• http://jetienne.com share itself
• http://jetienne.com/portfolio and below share portfolio