Investigate mobile support

[jamesroutley]

We've had lots of requests for mobile support - let's work out how it could work.

• Screen size might be an issue - what if the screen cuts columns of the grid off?
• Touch input vs virtual arrow keys

[graphnode]

Screen size might be an issue - what if the screen cuts columns of the grid off?

Viewport meta tag on the game page can be used to avoid this.

Touch input vs virtual arrow keys

Swipes for keyboard keys should work in most cases. The problem is the size of the dots for onDotClicked, 40x40px is the size recommended for usability.

[qqoen]

If viewport is set (<meta name="viewport" content="width=device-width, initial-scale=1.0"), then setting canvas width and height to 100% should display it correctly.
I think swipe events can be detected using touch events.