cuDNN support

• Provides proper cuDNN support via documentation
• Update app configs based on latest waifu2x-caffe (v1.2.0.2)

fix cpu present, added numThreads

• Fixed cpu_present not using cpu properly in waifu2x-caffe
• Added numThread in config so you can limit to how many threads ffmpeg will run. This is to prevent it from spiking up to 100% cpu usage.

Initial release

Base functionality completed.

• Able to specify input file to upscale. output file is optional (otherwise it creates a new file in the same directory as video2x.exe).
• Provide configurations to change encoding/upscaling options to your preference
• Able to distribute processing workload to match your PC.