Added command line option -r -rle.
This is used to enable run-length encoding for svg output.
Removed run-length encoding by default in function writeSVG.
Merge pull request #29 from d4ndo/master

Removed SVG run-length encoding by default. Issue 28
Removed magic comment.
Added an acknowledgement to Emmanuel Blot.
Merge branch '3.4'
Removed '-r' option (short for '--rle').
Added an acknowledgement to Daniel. (#29)
Removed the "r" in *optstring. short version -r as an option removed.
Merge pull request #30 from d4ndo/master

Removed the "r" in *optstring
Merge remote branch 'fukuchi/master' into android