Added README.txt to datstor

Change-Id: Ieb5d3abf630dd4c4baf77c866a88d19375047644
Gave content to README.txt

Change-Id: I87756699a4270ecda26f9ced9fbcfbae5298aae4
Merge pull request #1 from diegum70/playground/repo-origin-test

Gave content to README.txt
True implementation
Merge pull request #2 from diegum70/feature/dat-improvement

True implementation
Merge pull request #3 from diegum70/develop

Develop