Added unittest for peak_detection
Added unittest for peak_detection

INM-6/elephant,alperyeg/elephant,INM-6/elephant,carloscanova/elephant,pietroquaglio/elephant,ccluri/elephant,carloscanova/elephant,INM-6/elephant,NeuralEnsemble/elephant,pietroquaglio/elephant,apdavison/elephant,mdenker/elephant,alperyeg/elephant,mdenker/elephant,etorre/elephant,NeuralEnsemble/elephant,apdavison/elephant,etorre/elephant,JuliaSprenger/elephant,ccluri/elephant,mdenker/elephant,NeuralEnsemble/elephant