New license request: openmrs disclaimer

[pombredanne]

License Name
The full name of the license, preferably as provided by the original authors.

License Homepage URL
The primary and/or most reliable URL that contains the text of this license and/or information about it. This is ideally a web page dedicated to the license, but it may also be a source file that contains the license text.

https://github.com/openmrs/openmrs-core/blob/master/LICENSE

Reference URLs
Optionally provide URLs that contain references to the license.

License Notes
Optionally describe any aspects of the license that deserve special attention.

https://github.com/openmrs/openmrs-core/blob/master/LICENSE#L366 has an extra rider for warranty that we should track