recreate LICENSE file for CRAN

jgabry · web-flow · commit 709f5bf46d6b · 2019-11-06T15:37:46.000-05:00
(LICENSE.md has the full license)
diff --git a/LICENSE b/LICENSE
@@ -0,0 +1,2 @@
+YEAR: 2019
+COPYRIGHT HOLDER: Stan Developers and their Assignees

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	`+YEAR: 2019`
	`2`	`+COPYRIGHT HOLDER: Stan Developers and their Assignees`