Add explicit versioninig.
Add explicit versioninig.

See https://github.com/deeplearning4j/ops/issues/1

Synopsis: for build automation, it is better to have version set in
single place, rather than parsing out poms. The VERSION file in project
root directory contains the current version number, which can be applied
to poms with: `mvn versions:set -DnewVersion=$(cat VERSION)
-DgenerateBackupPoms=false`

gagatust/nd4j,ambraspace/nd4j,huitseeker/nd4j,ambraspace/nd4j,deeplearning4j/nd4j,huitseeker/nd4j,gagatust/nd4j,drlebedev/nd4j,drlebedev/nd4j,smarthi/nd4j,smarthi/nd4j,deeplearning4j/nd4j