add license

LICENSE

@@ -0,0 +1,37 @@
+The Star And Thank Author License (SATA)
+
+Copyright (c) <Qingdao University Online Judge Dev Team> <info@qduoj.com>
+
+Project Url: https://github.com/QingdaoU/OnlineJudgeOpenAPI
+
+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.
+
+And wait, the most important, you shall star/+1/like the project(s) in project url
+section above first, and then thank the author(s) in Copyright section.
+
+Here are some suggested ways:
+
+ - Email the authors a thank-you letter, and make friends with him/her/them.
+ - Report bugs or issues.
+ - Tell friends what a wonderful project this is.
+ - And, sure, you can just express thanks in your mind without telling the world.
+
+Contributors of this project by forking have the option to add his/her name and
+forked project url at copyright and project url sections, but shall not delete
+or modify anything else in these two sections.
+
+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.