The purpose of the templatesensor is to get contributors up and running
faster when adding a new sensor.
* Created library named 'sensortemplate'
* Added C++ source
* Added swig interface files for java, javascript, and python
* Added sensortemplate image file
* Added examples for c++, java, javascript, and python
* Updated contributions.md with steps to create a new sensor from
the sensortemplate library.
Signed-off-by: Noel Eck <noel.eck@intel.com>
