%\documentclass[letterpaper]{dapper-invoice}
\documentclass[letterpaper,currency=dollar]{dapper-invoice}
%\documentclass[letterpaper,currency=euro]{dapper-invoice}
%\documentclass[letterpaper,currency=pound]{dapper-invoice}
%\documentclass[letterpaper,currency=btc]{dapper-invoice}
%\documentclass[letterpaper,currency=ltc]{dapper-invoice}
%\documentclass[letterpaper,currency=doge]{dapper-invoice}

\newcommand{\invoiceNo}{1001}
\newcommand{\balance}{137.50}
\newcommand{\duein}{14}% days

\newcommand{\me}{David~McMackins}
\newcommand{\clientName}{Sample~Client}

\setmetadata{\me}{Delwink, LLC}{\invoiceNo}{\clientName}

\defaultfontfeatures{ Path = ./Fonts/ }
\usepackage{fontawesome}

\usepackage{graphicx}

\begin{document}

\newfontface\mainLightItalic{OpenSans-LightItalic}
\makeheader{\includegraphics[width=8cm]{delwinkr}}{\invoiceNo}

\twocolumnlayout{
  \begin{infoSection}
    \infoBox{Client}{\clientName \\
      123 Street Address \\
      City, State 55555 }
    \infoBox{Project}{\#123.456}
    \infoBox{Contact}{Jane Smith}
    \infoSub{\faMobilePhone}{\small\slshape +1~(555)~555-5555}
    \noalign{\addvspace{8ex}}
    \infoBox{}{
      {\huge\formatcurrency{\balance} \arrowbase} \\
      {\small\color{subduedColor} due \duedate{\duein}}
    }
  \end{infoSection}
}{
  \begin{infoSection}
    \infoBox{\arrowtarget Payable To}{
      \me \\
      2000 My Dr \\
      City, ST 00000
    }
    \infoSub{\faMobilePhone}{\small\slshape +1~(800)~335-9465}
    \infoSub{\tiny\faEnvelope}{\small\slshape \emaillink{sales@delwink.com}}
  \end{infoSection}
}

\drawarrow

\addvspace{4ex}

\begin{qtyItemization}

  \lineitem{2015/4/11}{2}{50}{Discussed requirements with client}

  \lineitem{2015/4/11}{1.25}{50}{Wrote Invoice in LaTeX}

  \lineitem{2015/4/11}{0.5}{50}{Packaged Invoice in .cls file}

  \beginsummary

  \summaryline{Total}{\formatcurrency{\InvoiceTotal}}

  \summaryline{Paid}{\formatcurrency{50}}
  \summaryline{Balance Due}{\formatcurrency{\balance}} % not really any math support (yet)

\end{qtyItemization}

\end{document}