Alternatives for compilation

[CedricHirschi]

I think adding a guide for compiling the projects with a Makefile would be quite nice.
In the case of the nRF52 projects, this could be an alternative to installing Segger Embedded Studio, and in the case of the MSP430 projects it could still simplify project building.

For this, we would have to supply the correct Makefiles, which I have already partly done in my fork.

For flashing, some alternate tools like nrfjprog and MSP430-Flasher could be used.

Although the guides for the existing IDEs may be more fool proof for both sides, I think the effort of providing these alternatives may be small for the value it gives.

[CedricHirschi]

Also, for the MSP firmware, there now exists an online solution. This could also be very nice for an easier start. Importing the current project as is works for me.