* Added header with help and information

* Moved git information to left prompt, with
  support for:
    * +ZSH_THEME_GIT_PROMPT_UNTRACKED, MODIFIED,
    STASHED, ADDED, UPSTREAM STATUS
    (if applicable)
* Removed right prompt
* Refactored following Google's guidelines for
  scripts [ http://goo.gl/oJSXH2 ]
    * Using local variables where applicable

themes/michelebologna.zsh-theme

-# reference colors
-GREEN="%{$fg_bold[green]%}"
-RED="%{$fg_bold[red]%}"
-CYAN="%{$fg_bold[cyan]%}"
-YELLOW="%{$fg_bold[yellow]%}"
-BLUE="%{$fg_bold[blue]%}"
-MAGENTA="%{$fg_bold[magenta]%}"
-WHITE="%{$fg_bold[white]%}"
-
-COLOR_ARRAY=($GREEN $RED $CYAN $YELLOW $BLUE $MAGENTA $WHITE)
-
-# color reset
-RESET_COLOR="%{$reset_color%}"
-
-# which color should be applied?
-USERNAME_NORMAL_COLOR=$WHITE
-USERNAME_ROOT_COLOR=$RED
-HOSTNAME_NORMAL_COLOR=$BLUE
-# uncomment next line if you want auto-generated hostname color
-#for i in $HOST; HOSTNAME_NORMAL_COLOR=$COLOR_ARRAY[$[((#i))%7+1]]
-HOSTNAME_ROOT_COLOR=$RED
-HOSTNAME_COLOR=%(!.$HOSTNAME_ROOT_COLOR.$HOSTNAME_NORMAL_COLOR)
-CURRENT_DIR_COLOR=$CYAN
-
-# zsh commands
-USERNAME_COMMAND="%n"
-HOSTNAME_COMMAND="%m"
-CURRENT_DIR="%~"
-
-# output: colors + commands
-USERNAME_OUTPUT="%(!..$USERNAME_NORMAL_COLOR$USERNAME_COMMAND$RESET_COLOR@)"
-HOSTNAME_OUTPUT="$HOSTNAME_COLOR$HOSTNAME_COMMAND$RESET_COLOR"
-CURRENT_DIR_OUTPUT="$CURRENT_DIR_COLOR$CURRENT_DIR"
-LAST_COMMAND_OUTPUT="%(?.%(!.$RED.$GREEN).$YELLOW)"
-
-# git theming
-ZSH_THEME_GIT_PROMPT_PREFIX="("
+# Michele Bologna's theme
+# http://michelebologna.net
+#
+# This a theme for oh-my-zsh. Features a colored prompt with:
+# * username@host: [jobs] [git] workdir % 
+# * hostname color is based on hostname characters. When using as root, the 
+# prompt shows only the hostname in red color.
+# * [jobs], if applicable, counts the number of suspended jobs tty
+# * [git], if applicable, represents the status of your git repo (more on that
+# later)
+# * '%' prompt will be green if last command return value is 0, yellow otherwise.
+# 
+# git prompt is inspired by official git contrib prompt: 
+# https://github.com/git/git/tree/master/contrib/completion/git-prompt.sh
+# and it adds:
+# * the current branch
+# * '%' if there are untracked files
+# * '$' if there are stashed changes
+# * '*' if there are modified files
+# * '+' if there are added files
+# * '<' if local repo is behind remote repo
+# * '>' if local repo is ahead remote repo
+# * '=' if local repo is equal to remote repo (in sync)
+# * '<>' if local repo is diverged
+
+local green="%{$fg_bold[green]%}"
+local red="%{$fg_bold[red]%}"
+local cyan="%{$fg_bold[cyan]%}"
+local yellow="%{$fg_bold[yellow]%}"
+local blue="%{$fg_bold[blue]%}"
+local magenta="%{$fg_bold[magenta]%}"
+local white="%{$fg_bold[white]%}"
+local reset="%{$reset_color%}"
+
+local -a color_array
+color_array=($green $red $cyan $yellow $blue $magenta $white)
+
+local username_normal_color=$white
+local username_root_color=$red
+local hostname_root_color=$red
+
+# calculating hostname color with hostname characters
+for i in `hostname`; local hostname_normal_color=$color_array[$[((#i))%7+1]]
+local -a hostname_color
+hostname_color=%(!.$hostname_root_color.$hostname_normal_color)
+
+local current_dir_color=$blue
+local username_command="%n"
+local hostname_command="%m"
+local current_dir="%~"
+
+local username_output="%(!..$username_normal_color$username_command$reset@)"
+local hostname_output="$hostname_color$hostname_command$reset"
+local current_dir_output="$current_dir_color$current_dir$reset"
+local jobs_bg="${red}fg: %j$reset"
+local last_command_output="%(?.%(!.$red.$green).$yellow)"
+
+ZSH_THEME_GIT_PROMPT_PREFIX=""
 ZSH_THEME_GIT_PROMPT_SUFFIX=""
-ZSH_THEME_GIT_PROMPT_DIRTY=")$RED*"
-ZSH_THEME_GIT_PROMPT_CLEAN=")"
+ZSH_THEME_GIT_PROMPT_DIRTY=""
+ZSH_THEME_GIT_PROMPT_CLEAN=""
+ZSH_THEME_GIT_PROMPT_UNTRACKED="%%"
+ZSH_THEME_GIT_PROMPT_MODIFIED="*"
+ZSH_THEME_GIT_PROMPT_ADDED="+"
+ZSH_THEME_GIT_PROMPT_STASHED="$"
+ZSH_THEME_GIT_PROMPT_EQUAL_REMOTE="="
+ZSH_THEME_GIT_PROMPT_AHEAD_REMOTE=">"
+ZSH_THEME_GIT_PROMPT_BEHIND_REMOTE="<"
+ZSH_THEME_GIT_PROMPT_DIVERGED_REMOTE="<>"
 
-# wrap all together
-PROMPT='$USERNAME_OUTPUT$HOSTNAME_OUTPUT:$CURRENT_DIR_OUTPUT $LAST_COMMAND_OUTPUT%#$RESET_COLOR '
-RPROMPT='%1(j.fg: [%j].) $GREEN$(git_prompt_info)$RESET_COLOR [%@]'
+PROMPT='$username_output$hostname_output:$current_dir_output%1(j. [$jobs_bg].)'
+PROMPT+='$(__git_ps1)'
+PROMPT+=" $last_command_output%#$reset "
+RPROMPT=''