Fixed deprecation warning:
Fixed deprecation warning:

DEPRECATION WARNING: Passing a string to ActiveRecord::Base.establish_connection for a configuration lookup is deprecated, please pass a symbol (:sqlite3mem) instead. (called from <top (required)> at spec/spec_helper.rb:14)

sximba/rational_nested_set,markmercedes/awesome_nested_set,sximba/rational_nested_set,tcjuan/awesome_nested_set,oesgalha/awesome_nested_set,collectiveidea/awesome_nested_set,petergoldstein/awesome_nested_set,rbo7nik/awesome_nested_set,experteer/awesome_nested_set