scan2scan_distances: deactivated unused code with errors for building without OpenMP
detectCylinder circleDetetctor: fixed non-constant-expression cannot be narrowed from type 'RBD_COMMON::Real' (aka 'double') to 'float' in initializer list [-Wc++11-narrowing]
Travis macOS: fixed broken brew script
fixed naming issue in the variable related to Dorit's commit 27eb4a1bba32c20007b56fbeef9448946f78a6b1
Fixed missing OpenMP::OpenMP_CXX for CMake <3.9
OpenMP on macOS
detect tool
travis build for macOS