Add plugins made with DPF to README
Add plugins made with DPF to README

DISTRHO/DPF,DanielAeolusLaude/DPF,DanielAeolusLaude/DPF,DanielAeolusLaude/DPF,DISTRHO/DPF,DISTRHO/DPF,DanielAeolusLaude/DPF,DISTRHO/DPF