Add default sample time BallAndBeam

src/LabProcesses.jl

@@ -37,15 +37,17 @@ finalize(p::AbstractProcess)    = error("Function not implemented for $(typeof(p
 struct BallAndBeam <: PhysicalProcess
     h::Float64
 end
+BallAndBeam() = BallAndBeam(0.01)
 
 struct BallAndBeamSimulator <: SimulatedProcess
     h::Float64
 end
+BallAndBeamSimulator() = BallAndBeamSimulator(0.01)
 
 const BallAndBeamType = Union{BallAndBeam, BallAndBeamSimulator}
 num_outputs(p::BallAndBeamType) = 2
 num_inputs(p::BallAndBeamType)  = 1
-outputrange(p::BallAndBeamType) = [(-10,10),(-1,1)] # Beam angle, Ball position 
+outputrange(p::BallAndBeamType) = [(-10,10),(-1,1)] # Beam angle, Ball position
 inputrange(p::BallAndBeamType)  = [(-10,10)]
 isstable(p::BallAndBeamType)    = false
 sampletime(p::BallAndBeamType)  = p.h