Print out SupCap Bank DC-DC Iout in log
Initialize cap before initialize charge for Sup Cap Bank

  This solves an bug in initial bank energy.
Added nnet approximation test examples

  This example is intended to generate nnet model to
  be used in the simulator
Added one set training and testing data for nnet matlab example
Merge branch 'master' of /home/yzhang/EnergySys/simu/constant_power_charging_test