Tidy up spider, change eye drawing and add to a function.
Now eye position depends on size - which is a param for the
spider function.
Tried creating an army of spiders, but too much for the Pi.
Add start of doc for spider, needs finishing and screenshot.
Merge remote-tracking branch 'upstream/master'
Complete draft of spider doc and add code for this.
Tabbing code blocks in spider doc and spider image.
Generate spider.pdf
Fix problems with spider doc and regen PDF.
Merge pull request #1 from glenpike/master

For Spider code and docs