I included a small design for the MCP2200 USB UART chip from Microchip since the pricing on this chip is way better than that of the FTDI FT232RL chip. Octopart has the MCP2200 $1.92 vs $4.95 for the FT232 chip. Overall the board works well and I plan to incorporate this chip into a number of other designs. Feel free to drop me a line if you have any questions about this chip. The schematic is attached below.