Seed setting for RandomNode

To make it more useable for design since it provides repeatability and
stability.
Range Node

RangeNode creates N (min=2) evenly distributed float values between
start and stop. Start=2 Stop=4 Divisions=5 -> [1.0, 1.25, 1.5, 1.75,
2.0]. Works with Stop < Start.
Mistaken change
Merge pull request #9 from ly29/master

RangeNode and update RandomNode with Seed Value