🔨 ZSH prompt refactor (carloscuesta#16)

* 🔨 Refactor into a single materialshell.zsh-theme

By removing the specified numeric colors and using [colorName] there's no need to have to separate files.

* 📝 Update instructions

README.md

@@ -24,12 +24,12 @@ Before starting, you will need to **download materialshell**:
 
 ### Zsh
 
-To setup the prompt, you will need to have [```materialshell.zsh-theme```](https://github.com/carloscuesta/materialshell/blob/master/zsh/materialshell-dark.zsh-theme) and [Oh-My-Zsh](http://ohmyz.sh/) installed. Then follow the next steps:
+To setup the prompt, you will need to have [```materialshell.zsh-theme```](https://github.com/carloscuesta/materialshell/blob/master/zsh/materialshell.zsh-theme) and [Oh-My-Zsh](http://ohmyz.sh/) installed. Then follow the next steps:
 
 #### [Oh-My-Zsh](http://ohmyz.sh/)
 
-1. Copy ```zsh/materialshell.zsh-theme``` _(dark, oceanic or light)_ to ```~/.oh-my-zsh/themes/``` folder.
-2. Modify ```.zshrc``` to enable the theme with ```ZSH_THEME="materialshell-dark"``` or ```ZSH_THEME="materialshell-oceanic"``` depending on the version you want.
+1. Copy ```zsh/materialshell.zsh-theme``` to ```~/.oh-my-zsh/themes/``` folder.
+2. Modify ```.zshrc``` to enable the theme with ```ZSH_THEME="materialshell"```.
 3. Save and restart your terminal.
 
 ## Shell Colors

zsh/materialshell.zsh-theme

@@ -0,0 +1,55 @@
+eval red=$fg[red]
+eval green=$fg[green]
+eval yellow=$fg[yellow]
+eval blue=$fg[blue]
+eval magenta=$fg[magenta]
+eval cyan=$fg[cyan]
+eval white=$fg[white]
+eval grey=$fg[grey]
+
+PROMPT='$(_user_host)${_current_dir}$(git_prompt_info)
+%{$white%}>%{$reset_color%} '
+PROMPT2='%{$grey%}◀%{$reset_color%} '
+RPROMPT='$(_vi_status)%{$(echotc UP 1)%}$(git_prompt_short_sha) ${_return_status} %{$white%}%T%{$(echotc DO 1)%}%{$reset_color%}'
+
+local _current_dir="%{$green%}%0~%{$reset_color%} "
+local _return_status="%{$red%}%(?..×)%{$reset_color%}"
+
+function _user_host() {
+  echo "%{$red%}%n%{$reset_color%}%{$white%} at %{$yellow%}%m%{$reset_color%} %{$white%}in "
+}
+
+function _vi_status() {
+  if {echo $fpath | grep -q "plugins/vi-mode"}; then
+    echo "$(vi_mode_prompt_info)"
+  fi
+}
+
+if [[ $USER == "root" ]]; then
+  CARETCOLOR="$red"
+else
+  CARETCOLOR="$white"
+fi
+
+MODE_INDICATOR="%{_bold$yellow%}❮%{$reset_color%}%{$yellow%}❮❮%{$reset_color%}"
+
+ZSH_THEME_GIT_PROMPT_PREFIX="%{$white%}on %{$blue%}"
+ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%} "
+
+ZSH_THEME_GIT_PROMPT_DIRTY=" %{$red%}✗%{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_CLEAN=" %{$green%}✔%{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_ADDED=" %{$green%}✚{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_MODIFIED=" %{$yellow%}⚑{$reset_color%} "
+ZSH_THEME_GIT_PROMPT_DELETED=" %{$red%}✖{$reset_color%} "
+ZSH_THEME_GIT_PROMPT_RENAMED=" %{$blue%}▴{$reset_color%} "
+ZSH_THEME_GIT_PROMPT_UNMERGED=" %{$cyan%}§{$reset_color%} "
+ZSH_THEME_GIT_PROMPT_UNTRACKED=" %{$grey%}◒{$reset_color%} "
+
+# Format for git_prompt_long_sha() and git_prompt_short_sha()
+ZSH_THEME_GIT_PROMPT_SHA_BEFORE="%{$reset_color%}[%{$yellow%}"
+ZSH_THEME_GIT_PROMPT_SHA_AFTER="%{$reset_color%}]"
+
+# LS colors, made with http://geoff.greer.fm/lscolors/
+export LSCOLORS="exfxcxdxbxegedabagacad"
+export LS_COLORS='di=34;40:ln=35;40:so=32;40:pi=33;40:ex=31;40:bd=34;46:cd=34;43:su=0;41:sg=0;46:tw=0;42:ow=0;43:'
+export GREP_COLOR='1;33'