ignition-sensors2 2.1.0~pre2 (#755)
ignition-sensors2 2.1.0~pre2 (#755)

* ignition-sensors2: update 2.1.0~pre2

* ignition-sensors2: update 2.1.0~pre2 bottle.

j-rivero/homebrew-simulation,osrf/homebrew-simulation,scpeters/homebrew-simulation