Add a brief explanation.

2016-04-15 22:19:36 -07:00 · 2016-04-15 22:19:36 -07:00 · 0021a032b3
--- a/Ruby.gitignore
+++ b/Ruby.gitignore
@ -10,6 +10,7 @@
 /test/version_tmp/
 /tmp/

+# Used by dotenv library to load environment variables.
 # .env

 ## Specific to RubyMotion: