message: rm accord from nuspec
diff: <copyright>Copyright (c) 2018 Andrey Parfenov</copyright>
  <tags>BrainFlow EEG EMG BCI OpenBCI</tags>
  <dependencies>
  - <dependency id="Accord" version="3.8.0" />
  - <dependency id="Accord.Math" version="3.8.0" />
  </dependencies>
  </metadata>
  <files>
  