Move SDK documentation to RTD

- Move SDK doc from wiki.onap.org/display/DW/DCAE+SDK

Issue-ID: DCAEGEN2-2277
Signed-off-by: Piotr Marcinkiewicz <piotr.marcinkiewicz@nokia.com>
Change-Id: I94e164c74a1e2e0af5d4db11dc45fde0bb6f0426
6 files changed