Merge branch 'master' of github.com:acrobotic/Ai_pcDuino_Examples


Former-commit-id: ecd59e52151fd9caa731a2bfe16fef2beffd2c5d
PIR motion sensing demo ported to pcDuino


Former-commit-id: 6c681361f59eb4ed767c573c25771232c623c2d9
Merge branch 'master' of github.com:acrobotic/Ai_pcDuino_Examples


Former-commit-id: d7454969b239204eecb81c929689fab6479eb196
Merge branch 'master' of https://github.com/acrobotic/Ai_pcDuino_Examples


Former-commit-id: b2ee0bb79fdec21d66960fa7534a124ba1babbce
remove large binary


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rename models folder


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simplify naming


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