Merge branch 'ignore-byebug-history' into 'master'

Ignore .byebug_history

This allows me to use `git add .` without problems and retain all my history of `byebug`

What do you think @DouweM?

See merge request !3145

.gitignore

@@ -15,6 +15,7 @@
 .sass-cache/
 .secret
 .vagrant
+.byebug_history
 Vagrantfile
 backups/*
 config/aws.yml