modifying file_rx and file_tx to test x300
	modified:   src/file_rx.cc
    modified:   src/file_tx.cc
    --
    Modified the center frequency to test with x300
modifying to test with x300
	modified:   src/miso_packet.cc
    --
    modified with bandwidth and the center frequency to test with x300
I cant'follow what is happening with this
	modified:   src/simo_sig.cc
    --
    Well, I think everything is clear from the message above.
a simple script to generate pn and save it to file
	new file:   src/generate_pn.cc
    --
testing the x300 with sinusoinds
	new file:   src/x300-test.cc
    --
adding to gitignore
	modified:   .gitignore
    --
    added x300-test and generate_pn to gitignore
adding unwanted directories to gitignore
	modified:   .gitignore