restructured README
added some more notes
handle SIGKILL, print help when there are no args
additional notes added
removed deprecated mark from comment
check added, so maximal MAX_PARAMETER_COUNT are read
comment added
replaced static 'src_debuggin' variable with macro

The minx_config_get() function runs in O(1), so there is no need to
'cache' this value in a static variable!
comments added, why the kernel initializes registers and heap