re-license to MIT

Author: simonpcouch

.Rbuildignore

@@ -25,3 +25,4 @@
 README_files/
 ^pkgdown$
 ^\.github$
+^LICENSE\.md$

DESCRIPTION

@@ -70,7 +70,7 @@ Authors@R:
 Description: The objective of this package is to perform
     inference using an expressive statistical grammar that coheres with
     the tidy design framework.
-License: CC0
+License: MIT + file LICENSE
 URL: https://github.com/tidymodels/infer,
     https://infer.tidymodels.org/
 BugReports: https://github.com/tidymodels/infer/issues

LICENSE

@@ -0,0 +1,2 @@
+YEAR: 2021
+COPYRIGHT HOLDER: infer authors

LICENSE.md

@@ -0,0 +1,21 @@
+# MIT License
+
+Copyright (c) 2021 infer authors
+
+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.