saturn mass set to something small, as zero was not allowed
Merge pull request #73 from ian-g/gh-pages

a few tweaks
Merge branch 'master' of https://github.com/KEWilliams/asteroid-prospector into KEWilliams-master

Conflicts:
	js/main.js
cleaned out unused code, added some more comments.
no functional changes.
Merge pull request #76 from kris-sum/master

cleaned out unused code, added some more comments.
Sidebar changes
Another screenshot
Added screenshot
Planet and map tweaks
Remove player controls after game over
Object outside of the minimap now stick to the outside of themini map
Slight optimisation and comments
Background moves in proportion to ship movement