Add MIT License

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018 Jiawei Zhuang
+
+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.

README.rst

@@ -1,9 +1,7 @@
 GEOS-Chem on cloud computing platforms
 ======================================
 
-.. image:: https://readthedocs.org/projects/cloud-gc/badge/?version=latest
-:target: http://cloud-gc.readthedocs.io/en/latest/?badge=latest
-:alt: Documentation Status
+|docs| |license|
 
 `GEOSChem-on-cloud <http://acmg.seas.harvard.edu/research.html#cloud>`_
 project aims to build a cloud computing capability for GEOS-Chem_ that can be easily
@@ -13,3 +11,11 @@ Please see `online documentation <http://cloud-gc.readthedocs.io>`_
 for the most complete and up-to-date information.
 
 The old tutorial is renamed to `README_2017.md <./README_2017.md>`_ for archival.
+
+.. |docs| image:: https://readthedocs.org/projects/cloud-gc/badge/?version=latest
+   :target: http://cloud-gc.readthedocs.io/en/latest/?badge=latest
+   :alt: Documentation Status
+
+.. |license| image:: https://img.shields.io/badge/License-MIT-blue.svg
+   :target: https://github.com/JiaweiZhuang/cloud_GC/blob/master/LICENSE
+   :alt: License