Move coffee Makefile
Fix coffee Makefile paths and README
Add jxpretty example
Whitespace trivia in examples
Add jxpretty and Makefile.coffee to dist
Merge branch 'add-jxpretty-example'

Add a "jxpretty" command line example, which pretty prints JSON from stdin
to indented JX stdout.  This is more a demonstration of the JX format which
is a bit easier to read than standard JSON.

Also change coffeescript example to match the other examples: move the
Makefile to dist/Makefile.coffee like the others.  A few whitespace trivia
issues also fixed.