new code for slider control testing code

for test only, just control the slider go forward and stop 1s then
backward and stop 1s then loop.
delete the test submittion

just delete it.
upload SnySender TEST code and do some cleaning

SnySender TEST code V2.18
Cleaning the workspace and devide codes to two kinds: process and old
mod for sider test code

pin and duty cycle change
Merge pull request #4 from wingprince/master

new slider code and communication