Revert "fish has renamed . to source"
Revert "fish has renamed . to source"

As @GlitchMr commented, fish 2.1 has not been released yet and even
then, the command . will only be deprecated, not removed.

This reverts commit 03833fda7b89cd61bff13c0659969f805e215eeb.

oh-my-fish/plugin-fry