intial creation for making JAVA API documetation

intial creation for making JAVA API documetation
Running this shell results in  the "Java_API" folder
and "Java_API/index.html" explains Java APIs

Change-Id: I2302386d64d6f5df26286ecc931b65e2ab27d818
Signed-off-by: Rami Jung <rami.jung@samsung.com>
Reviewed-on: https://gerrit.iotivity.org/gerrit/3691
Tested-by: jenkins-iotivity <jenkins-iotivity@opendaylight.org>
Reviewed-by: Rahul Rahul <rahul.rahul@intel.com>
Reviewed-by: Tim Kourt <tim.a.kourt@intel.com>
Reviewed-by: Madan Lanka <lanka.madan@samsung.com>