Move GPL license from each file to one COPYING file.

 * Edit each file to move out the full GPL license
     to a single COPYING file, that is referred to
     from each file.
Merge pull request #5 from antrorsum/fix/license_tidyup

Move GPL license from each file to one COPYING file. [antrorsum]
output analogue coil data in XML in preparation for plotting
fix analogue buffer size check
rename some xml components and use correct slash for item end
Added readme and licencing files
add graphical plot command to python helper and example plots for reference
Merge branch 'master' of github.com:ApertureLabsLtd/RFIDler
supporting graphic for wiki howto
supporting graphic for wiki howto
supporting graphic for wiki howto
supporting graphic for wiki howto
supporting graphic for wiki howto
supporting graphic for wiki howto
supporting graphic for wiki howto
supporting graphic for wiki howto
supporting graphic for wiki howto
supporting graphic for wiki howto
fix incorrect kseg0_program_mem address in procdefs.ld