Arduino Milli-Shield README.md incorrect

[tdhammer]

Steps 12 & 13 imply that if one does not have a DHT11 sensor, it is unnecessary to install the additional libraries.

• Do you have the DHT11 sensor?
• If yes, use Manage Libraries to locate and install the following libraries:

However, the code will not compile without these and they should be required steps even if one intends to work with the code WITHOUT the sensor.