Fixed #1157: Add support for import/export.
Fixed #687: Allow input via stdin
Followup #687: Use '-' as a marker for stding
Followup #687: eqnull
Fixed #741: expose loadConfig from CLI
Fixed #839: Add support for prereq files
Fixed #810: Made --reporter description in -h more straightforward
Fixed #809: Added short options to bin/jshint where it made sense
Fixed #696: Add support for --exclude arg
Fixed #779: Add support for !pattern in the .jshintignore files
Fixed #695: Use website defaults when used from CLI
Fixed #1153: Moved E037 and E038 to the warnings section and changed their message.