use oh-my-zsh/lib/history.zsh as default history setting
remove duplicated setting

use oh-my-zsh/lib/directories.zsh
remove deplicated setting

use oh-my-zsh/lib/theme-and-appearance.zsh
remove duplicated setting

use oh-my-zsh/lib/completion.zsh
remove duplicated setting

use oh-my-zsh/lib/grep.zsh
remove duplicated setting

use oh-my-zsh/lib/key-bindings.zsh
remove duplicated setting
remove duplicated setting
source antigen firstly
change alias la, ll
move LSCOLORS difinition to color theme
extract variable difinition into .zshenv