Initial import.
Import dotjs stuff.
Update bundle path is not used.
Remove exec bit from partial zsh init files.
Use += to append components to an array.
Add [alias] section.
Bind ^r to history-incremental-pattern-search-backward.
Accept .tgz.
Add !important.
git st is now an alias for git status -s.
Only ls depends on dircolor's existence.
Merge branch 'master' of github.com:sakuro/dotfiles
Modify find_first_available and introduce find_first.

find_first_available was fixed to test using is_executable,
while find_first takes a predicate as its first argument.
--user-install is unnecessary in rbenv.
Use rbenv paths.
-p to find the command only in $PATH.
Remove is_set function.
Merge remote-tracking branch 'origin/master'
Removed.
Explicitly set shell to zsh.