Updated adaptor to use new driver pwm write based on scaledDuty, and updated examples to reflect the new changes.
Adding standard travis.yml file.
Update travis.yml to be able to compile usb and find usb.h by installing libusb-dev.
Fix typo in before install script.
Fix libusb-dev install command for travis.
Use gcc compiler.
Remove compiler from travis file and use default.
Use current stable nodejs instead of 11.
Fix tests to pass with new adaptor changes with scaled duty.
Change angleLimits param in servo examples for just limits.
Added readInterval to adaptor, and added example for new button events.
Merge pull request #15 from hybridgroup/pwm-write-upd

Pwm write upd
Fix test for new extraParams changes.
Merge branch 'development' into read-interval-upd

This adds pwm updates and .travis.yml config.
Updated examples and change  extra param for just
Merge pull request #14 from hybridgroup/read-interval-upd

Added readInterval to adaptor, and added example for new button events.
Bump version to "0.6.0"