Revert "Update medium_clap.js"

[topshef]

Reverts topshef/animatedbuttons#8

A few fixes needed:

• sign to be removed $0.05 round to 2 decimal places .. eg i'm seeing $1.9999999999999 page load change pending (item 3 above)

PS if possible can you split the js to a new file and revert the old one? so that the old demos still work (coin2 etc)