probtrackx2 interface has incorrect trait for rseed arg

[dPys]

The --rseed flag should be string or integer, but not boolean. Probably FSL's fault for not making the usage clear in the help options...

Happy Halloween!

[mgxd]

@dpisner453 thanks, would you like to give this fix a shot in a PR?

[dPys]

Sure thing, I can probably take a look this weekend :)

[justbennet]

Does it matter whether it is string or integer?