Crazyflie-Firmware/How-to-Build.md

+## How to add new files to the build path
+- create a new file in crazyflie firmware folder
+- add the to be generated .o file to the makefile's list of project objects, ex: `PROJ_OBJ += student_controller.o` on line 181
+- As the make file executes it generates dependencies for each files based on the `#include` preprocessor command. These dependency files are automatically placed in `/bin/dep/` folder.
+- run `make` to ensure the new file is included in your build
\ No newline at end of file