Basic phaser setup
Add frog art.
Add a Baddie.

He doesn't do much yet, just runs across the screen.
Make the Baddie kill the Player if they overlap.

Basically what the stars are doing to the Player, but in this case the Player dies.
Allow Baddie's creator to set the x,y of where he arrives.
Move the cursor key handling into a function

As I'm about to add a bunch more stuff here and want it cleaned up first.
If the player hits a certain area of the screen, create another left-running Baddie.

There's some weird stuff here around the Baddie sprite/killing/nulling, which I should come back to.
Instead of Baddies killing the player outright, add a Health score.