Updated jquery.snow.js to the latest.

Updated jquery.snow.js to the latest.
Added two more color options: you can now have three different colors on
the flakes.
Added option to change the dingbat used: you now have 20 different
characters to choose from.
Changed the default values of the snowflake sizes a bit.
Changed the z-index to 20 instead of 999!
Using

instead of <div=id"flake"> since ID should be
unice.

Happy Holidays!

1.0.0

Create README.md