added --cors option to webapp to enable Cross-Origin Resource Sharing
renamed get data to "value" instead of "sample"

Conflicts:
	lib/orocos/webapp/tasks.rb
Merge pull request #15 from planthaber/webapp_value

renamed get data to "value" instead of "sample"
Merge pull request #11 from planthaber/cors

added --cors option to webapp to enable Cross-Origin Resource Sharing