README
add --quality=75-100 to pngquant command, fixes #39
CONTRIBUTING.md
rename LICENSE file, refs #36
reinstate original fix for #31
1.6.19
add Tower.app icon
increase jpegMini finder dialog delay
scope find executions to files only

fixes #43
increase delay for JPEGmini/Finder to resolve file system paths
harden handling of floats, ints, reals. refs #51
run pngquant on 8 cores in parallel when operating on a directory, refs #52
create temp directory for managing files
check availability of Apps and GUI scripting
run applications if enabled in command line options
simplify src structure
npm ignore Gruntfile
validate --directory value
correct path to applescript lib
apply normalisation of localised numbers, refs #51