Prevent clear screen shortcut from clearing vim

- This prevents the C-space C-space shortcut from working if vim is
  running in the active pane
Ignore configstore
Move fish gitignore file into fish/.gitignore
Merge pull request #8 from alexdavid/prevent_vim_clearscreen

Prevent vim clearscreen
Merge pull request #9 from alexdavid/ignore_configstore

Ignore configstore
Merge pull request #10 from alexdavid/clean_up_gitignore

Clean up gitignore
Merge branch 'master' into experimental