fix license name

Author: khumnath

LICENCE renamed to LICENSE

@@ -34,6 +34,8 @@ package() {
   cd "$_pkgname"
   DESTDIR="$pkgdir" cmake --install build
 
+  # License
+  install -Dm644 LICENSE "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
 
   # Desktop entry
   install -Dm644 /dev/stdin "$pkgdir/usr/share/applications/nepdate.desktop" <<EOF