readme and license information

Change-Id: I1e6d78287bd912155a677e03f79d184dae589505
Signed-off-by: Michele Carignani <michele.carignani@etsi.org>

LICENSE

+Unless specified otherwise, the content available on the ETSI Forge is released under the license below.
+
+ETSI Software License
+
+As long as the hereunder conditions are respected, non-exclusive permission is hereby granted, free of charge, to use, reproduce and modify this software source code, under the following conditions:
+
+* This source code is provided “AS IS” with no warranties, express or implied, including but not limited to, the warranties of merchantability, fitness for a particular purpose and warranties for non-infringement of intellectual property rights. ETSI shall not be held liable in any event for any direct or indirect damages whatsoever (including, without limitation, damages for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use of or inability to use the source code.
+
+* This permission is granted to facilitate the implementation of the related ETSI standard, provided that ETSI is given the right to use, reproduce and amend the modified source code under the same conditions as the present permission.
+
+* This permission does not apply to any documentation associated with this source code for which ETSI keeps all rights reserved.
+
+* The present ETSI Source Code license shall be included in all copies of whole or part of this source code and shall not imply any sub-license right.
+
+

Readme.md

+# NGSI-LD OpenAPIs
+
+This repository contains OpenAPI descriptions for the NGSI-LD interface defined by ETSI ISG CIM.
+
+## Contribute
+
+To get an account on ETSI Forge and to learn how to contribute visit the [Forge Getting started wiki](https://forge.etsi.org/wiki/index.php/Get_started).
+
+Change requests are managed using [Gerrit](https://forge.etsi.org/gerrit).
+
+## Report issues
+
+To report issues, bugs or requests please fill in a bug [at this location](https://forge.etsi.org/bugzilla/enter_bug.cgi?product=NGSI-LD).
+
+Find the currently open issues [here](https://forge.etsi.org/bugzilla/buglist.cgi?component=NGSI%20OpenAPIs%20general&list_id=193&product=NGSI-LD&resolution=---).
+
+## Contact information
+
+Email at `cti_support` at `etsi` dot `org`.
+
+## License
+
+Unless specified otherwise, the content of this repository and the files contained are released under the ETSI Software License.
+
+See the attached LICENSE file or visit
+
+  https://forge.etsi.org/etsi-software-license