add init settings for Shells.
add many new snippets for Ruby.
disable change yasnippet default expand syntax.
add post-hook in insert to change cursor color when string can be yasnippet expand.
add keybinding for *scratch* and IELM.
update abbrevs.
add more matches into popwin.
change shell program into $SHELL environment variable.
update anzu init.
add anzu into my custom mode-line format.
disable eval-eldoc.
change cursor default type.
add enh-ruby-mode into pretty-mode.
remove init.el set cursor color. keep in appearance init file.