update-bonescript.sh: use bonescript git repo on host to update board
extras/bacon_cape: added labs
my.js: add return callback on open
package.json: update version to 0.2.4
extras/bacon_cape: handle open return event
my.js: update dt template method

* Switch string names
* Enable ability to pass template to create_dt
Pre-work for adding bspwm_template.dts usage for analogWrite
extras/bacon_cape/flot: add flot library

http://www.flotcharts.org/
extras/bacon_cape/demo_flot.html: added flot demo