CLI: update command line 'report' options

[rnjudge]

Tern's command line is a bit cluttered. This commit attempts to
re-structure some of the {report} positional arguments. Namely:

• Use '-f REPORT_FORMAT' to denote report format instead of '-m'
• Use '-o FILE' to denote an report output file instead of '-f'
• Shorten '--keep-working-dir' option to '--keep-wd'
• Change '-V' to '-v' in order to get the version

There are a few other various style imorovemenets to the 'tern -h'
output such as changing ';' to '.' and removing an indentation.

This commit also updates the README documenation to reflect the
updated command line options, updates the invocation of the tests in
ci/test_files_touched.py and updates tern/report/report.py to reflect
the updated argument name values where applicable.

Since this commit changes Tern's user interface, it will break API and
not be compatible with downstream versions.

Resolves #390

Signed-off-by: Rose Judge [email protected]

[nishakm]

@rnjudge looks really good! Can you remove the { and } from the commit title and body? I've had issues with parsing messages in python using the curly braces and I don't want this one commit to mess up automation ;)

[rnjudge]

@rnjudge looks really good! Can you remove the { and } from the commit title and body? I've had issues with parsing messages in python using the curly braces and I don't want this one commit to mess up automation ;)

Done!