rename LICENSE.txt to LICENSE.

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 Zhao
+
+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.

LICENSE.txt

@@ -1,32 +0,0 @@
-
-ThinkPHP遵循Apache2开源协议发布，并提供免费使用。
-版权所有Copyright © 2006-2016 by ThinkPHP (http://thinkphp.cn)
-All rights reserved。
-ThinkPHP® 商标和著作权所有者为上海顶想信息科技有限公司。
-
-Apache Licence是著名的非盈利开源组织Apache采用的协议。
-该协议和BSD类似，鼓励代码共享和尊重原作者的著作权，
-允许代码修改，再作为开源或商业软件发布。需要满足
-的条件： 
-1． 需要给代码的用户一份Apache Licence ；
-2． 如果你修改了代码，需要在被修改的文件中说明；
-3． 在延伸的代码中（修改和有源代码衍生的代码中）需要
-带有原来代码中的协议，商标，专利声明和其他原来作者规
-定需要包含的说明；
-4． 如果再发布的产品中包含一个Notice文件，则在Notice文
-件中需要带有本协议内容。你可以在Notice中增加自己的
-许可，但不可以表现为对Apache Licence构成更改。 
-具体的协议参考：http://www.apache.org/licenses/LICENSE-2.0
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
-COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
-INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
-BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
-ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGE.