[Win] Add appveyor.yml
[Win] Add appveyor.yml

Fix #239

halton/realsense-extensions-crosswalk,jondong/realsense-extensions-crosswalk,halton/realsense-extensions-crosswalk,crosswalk-project/realsense-extensions-crosswalk,jondong/realsense-extensions-crosswalk,jondong/realsense-extensions-crosswalk,halton/realsense-extensions-crosswalk,halton/realsense-extensions-crosswalk,crosswalk-project/realsense-extensions-crosswalk,crosswalk-project/realsense-extensions-crosswalk,jondong/realsense-extensions-crosswalk,crosswalk-project/realsense-extensions-crosswalk