Added meta tags to header

Picked some keywords out of thin air.
Added facebook metadata

Fixes #2
Updated description
Merge branch 'patch-1'
MOARRRRR KEYWORDS!
Merge pull request #4 from tomwilshere/patch-2

MOARRRRR KEYWORDS!
Merge pull request #5 from tomwilshere/master

Added another YES Arnie.
Added tweet and like buttons
Modified position of buttons - vertical layout
More arnies. Made it all look nicer with a new font, rounded images and a well.
Replace fixed footer message with randomly chosen message.
More messages.
Reworded preworkout message.
Updated twitter and facebook buttons to be more nicerer.