Add .ruby-version file

I use the `rbenv` Ruby version manager, and adding this file makes that work.
2019-11-11 11:49:37 +01:00 · 2019-11-11 11:49:37 +01:00 · 54503f2dc4
parent 9757e7a216
commit 54503f2dc4
1 changed files with 1 additions and 0 deletions
--- a/.ruby-version
+++ b/.ruby-version
@ -0,0 +1 @@
+2.4.6