Merge pull request #266 from rrthomas/master

Fix some occurrences of dirName→baseDir overlooked in PR#261
Tidy up executables (fixes issue #195)

Put the user scripts (front-end command and sub-commands) in bin, and
add that to package.json.

Add various other bits of useful metadata to package.json.

Remove the unneeded serve.sh.

Move all the developer scripts into dev-scripts/

Adjust scripts and documentation as necessary to refer to new locations.
Improve a couple of bits of documentation
Fix commander’s arguments call to be fluent

Write command definitions in fully fluent style
Merge pull request #265 from rrthomas/cli-improvements

Tidy up executables
Fix red-pill for new executable paths
Fix path after moving the location of the script
Merge pull request #267 from rrthomas/cli-improvements

Fixes for executable path changes
Fix a couple of typos