raspberrypi-ua-netinst v1.4.1

Changelog:

• added configuration variables
  • set keyboard layout
• added method to set time with http
• dynamically add packages if needed by configuration variables
• added docs for configuration variables
• add hardware version 2 Model B+ (with BCM2837)

Bugfixes:

• locale selection
• backup kernel for reinstall (see #31 for workaround)