Merge pull request #455 from aslamnd/master

New theme 

themes/frontcube.zsh-theme

+local rvm="%{$fg[green]%}[$(rvm-prompt i v g)]%{$reset_color%}"
+
+PROMPT='
+%{$fg_bold[gray]%}%~%{$fg_bold[blue]%}%{$fg_bold[blue]%} % %{$reset_color%}
+%{$fg[green]%}➞  %{$reset_color%'
+
+RPROMPT='$(git_prompt_info) $(rvm)'
+
+ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg_bold[blue]%}[git:"
+ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_DIRTY="%{$fg[blue]%}] %{$fg[red]%}✖ %{$reset_color%}"
+ZSH_THEME_GIT_PROMPT_CLEAN="%{$fg[blue]%}] %{$fg[green]%}✔%{$reset_color%}"