Add README.md
Remove README.asciidoc
Merge branch 'master' of https://github.com/simplemachines-italy/Alcor6L
Merge branch 'master' of https://github.com/simplemachines-italy/Alcor6L
Orthogonalise target[] options to fp, long and longlong, lua->elua

Before this, lang=lua had different target options for the fp and non-fp
versions from the other languages.

This renames the lang 'lua' to 'elua' (to match mybasic, PicoC etc)
and all languages' target options are now "fp", "long" or "longlong".
First commit of build-system driver shell script

"./go -a" should build all the released firmware variants for Mizar32.
See the shell script's help for other options to build and program
other variants of the Alcor6L firmware.