Change some things about Nex charge slightly -- Instead of using shot multiplier...

Change some things about Nex charge slightly -- Instead of using shot multiplier, just go directly from 0 charge to 100% each time (same exact time to charge as before, 2 seconds, but done in a better way) - Also make it so that you have 50% charge when you first pick up the weapon, so you aren't totally screwed from it.