Adds support for creation of widgets on a board of Telemetryapp
add else statement
Adds support for creating flows in Telemetry App. \n Maps Widget struct to JSON payload
Makes CreateWidget() a function from Widget
Adds unit tests for Widgets
Maps remaining flow attributes to JSON and omit the ones that are not mandatory.
Merge pull request #11 from telemetryapp/9_Support_for_creating_new_widgets

9 support for creating new widgets