organize imports
add SOSAdapter example
add DescribeSensor example and refactor current examples
rename to SosAdapterRequestExample
add GetObservationRequestExample and refactor examples
add "om:samplingTime" property to eventTime
add README to clarify the role of available tests
fix license header
demo test case commented out by default
Merge pull request #4 from ridoo/sos-adapter-example

add examples for old SOSAdapter