update firmware.bin
update config sample
Implement a workaround to the bug reported in issues #520
where an absolute  move inbetween a G10 and G11 with zlift returns to the wrong Z
remove FIXME comment
Merge pull request #521 from wolfmanjm/fix/issue-520

Fix/issue 520
u[date firmware.bin
update the sample thermistor sample to point to wiki
add example beta setting
add -s to ls comamnd to print the file size
added d_fsize to the dirent in mbed library to get fsize
Merge pull request #523 from wolfmanjm/feature/add-size-to-ls

add -s to ls comamnd to print the file size
Added automatic end-stop offset calbration to M206:

M206 P X Y Z
When P is available in the line, every named axis will be assumed to be zero,
and the calculated offset inserted into memory.
Repairs issues surrounding homing for scara systems
Scara systems are not deltas, and just specifying delta homing will cause
issues in other mudules, such as zprobe
Merge pull request #525 from RepRapMorgan/scara_updates

Repairs issues surrounding homing for scara systems
Merge pull request #524 from RepRapMorgan/M206_improvements

Added automatic end-stop offset calbration to M206:
Move M206 improvements to M306 and leave M206 as is
Merge pull request #527 from wolfmanjm/feature/modify-new_m206-changes

Move M206 improvements to M306 and leave M206 as is
add an additional offset to M306 if Z has a value other than 0
Merge pull request #528 from wolfmanjm/upstreamedge

add an additional offset to M306 if Z has a value other than 0
fix M306 as per qharley (with improvements)
Merge pull request #529 from wolfmanjm/upstreamedge

fix M306 as per qharley (with improvements)