Merge branch 'master' into gh-pages
updated headline

updated headline
corrected header error

corrected header error
changed heading & fb share

changed heading & fb share
updated text & twitter button

updated text & twitter button
mobile info

mobile info
down typo

down typo
email form & google analytics

email form & google analytics
footer change

footer change
resize twitter and test fb

resize twitter and test fb
email button style and fb
fb like

fb like
paragraph

paragraph
paragraph2

paragraph2
added preview image and meta description

added preview image and meta description
description update

description update
simplified index (mobile message)

simplified index (mobile message)
FB comments box

FB comments box
some optimisations on comments

some optimisations on comments
updated comments description

updated comments description