Added code for tachometer to Shooter.java for determining whether the shooter is ready (no feedback).
Added values for tachometer to Values.java.
Changed controls in Robot.java.
Added gatekeeper code to Uptake.java.
Corrected bug in atTarget() in PIDVelocityMotor.java so that it performs the comparison correctly.
Changed atTarget() in PIDVelocityMotor.java to check within 5 RPM instead of 0.05.
Added port numbers for tachometer to Values.java.
Added constructor for shooter with tachometer to Robot.java.