Add code of conduct

Closes #7
Link to the homepage and tweak fonts

Montserrat is nice for titles but not fantastic for longer blocks of
text such as the code of conduct.
Add code of conduct

Closes #19.
Add Chris Lowis to list of members

Closes #20.
Tweak grammar and punctuation
Remove rogue quote from 2014-01-20 meeting link
Encode pipe character in fonts URL

Without this, the HTML validator gives an error.
Add Amazon affiliate links to books we've read

I've added these links to the books we've read. They were generated
using the Amazon affiliate tools. We can probably auto-generate them and
add them automatically if we move the book lists into `_data/`, but we
can do that at a later stage.

For the record, the affiliate account is administered by me, Chris
Lowis, but I commit to using any revenues to purchase books to donate to
the London Computation Club for the use of any members.

Closes #21, fixes #6.
Add Joel Chippindale to members
Don't scroll the automaton, overwrite itself instead

As a workaround while we attempt to optimise scrolling the whole
automaton, we can avoid redrawing the entire canvas by just drawing one
row at a time.
Use requestAnimationFrame instead of a fixed refresh rate

Using Paul Irish's polyfill from
http://www.paulirish.com/2011/requestanimationframe-for-smart-animating/
Flip direction rather than overwriting the automaton