Add .rbenv-gemsets to gitignore

I've seen rubymine adding this file recently. Since it's not something we already use, it should be safe to ignore.
2016-01-14 23:36:48 -05:00 · 2016-01-14 23:36:48 -05:00 · 72fc13de04
parent ebf6390875
commit 72fc13de04
1 changed files with 1 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@ -20,3 +20,4 @@ vendor/*
 .tags_sorted_by_file
 .ruby-version
 .ruby-gemset
+.rbenv-gemsets