Set up travis building of this repo

[mithro]

We should be building the firmware on every commit.

The travis code for the HDMI2USB-litex-firmware is here -> https://github.com/timvideos/HDMI2USB-litex-firmware/blob/master/.travis.yml

[mithro]

It will need to do things like

• Install sdcc
  • Do we want to check multiple sdcc versions?
  • Definitely want to test with the latest sdcc versions
• Compile firmware
  • (maybe) Upload the firmware.hex files somewhere (prebuilt repo?)
  • Should check it compiles for all dev boards
• Generates docs
  • Doxygen

[mithro]

Good example to follow mithro/fx2lib 's travis -> https://github.com/mithro/fx2lib/blob/master/.travis.yml

[mithro]

See https://github.com/timvideos/HDMI2USB-litex-firmware/issues/60 also

[paddatrapper]

This is done now, correct?

[mithro]

Yeap!