Add license

LICENSE.md

+## Instructional Material
+
+This instructional material is
+made available under the [Creative Commons Attribution
+license][cc-by-human]. The following is a human-readable summary of
+(and not a substitute for) the [full legal text of the CC BY 4.0
+license][cc-by-legal].
+
+You are free:
+
+* to **Share**---copy and redistribute the material in any medium or format
+* to **Adapt**---remix, transform, and build upon the material
+
+for any purpose, even commercially.
+
+The licensor cannot revoke these freedoms as long as you follow the
+license terms.
+
+Under the following terms:
+
+* **Attribution**---You must give appropriate credit (mentioning that
+  your work is derived from work that is Copyright © European Molcular Biology Laboratory,
+  provide a [link to the
+  license][cc-by-human], and indicate if changes were made. You may do
+  so in any reasonable manner, but not in any way that suggests the
+  licensor endorses you or your use.
+
+**No additional restrictions**---You may not apply legal terms or
+technological measures that legally restrict others from doing
+anything the license permits.  With the understanding that:
+
+Notices:
+
+* You do not have to comply with the license for elements of the
+  material in the public domain or where your use is permitted by an
+  applicable exception or limitation.
+* No warranties are given. The license may not give you all of the
+  permissions necessary for your intended use. For example, other
+  rights such as publicity, privacy, or moral rights may limit how you
+  use the material.
+
+## Software
+
+Except where otherwise noted, the example programs
+provided by the European Molecular Biology Laboratory are made available under the
+[OSI][osi]-approved
+[MIT license][mit-license].
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+[cc-by-human]: https://creativecommons.org/licenses/by/4.0/
+[cc-by-legal]: https://creativecommons.org/licenses/by/4.0/legalcode
+[mit-license]: https://opensource.org/licenses/mit-license.html
+[ci]: http://communityin.org/
+[osi]: https://opensource.org