Update docs/InteractiveForceGraph.md

[RosaRomeroGomez]

Added note to docs/InteractiveForceGraph.md related to render issue discussed on #60 and suggested by @kristianmandrup.

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[coveralls]

Coverage remained the same at 74.932% when pulling 7c9cbd2 on RosaRomeroGomez:update-README-alpha-option into 88f0141 on uber:master.

[kristianmandrup]

Thanks a lot. Will take a look shortly :)

[mp-exasol]

Fixed my Problem, but I also had to disabling "animate", maybe that should be added