fix filename of tmux-poewrline segments
fix term when screen ( xterm-256color -> screen )
tmux-powerline.zsh is change into plugin

 * add oh-my-zsh plugins
add aliase @h
Revert "fix term when screen ( xterm-256color -> screen )"

This reverts commit 0ae9523538f22a873e79f7e2c48cfe8d5548652c.
add ~/dev/bin to PATH
remove imap <C-j> <Esc>