Bunyan

- [issue 5] Fix `log.info() -> boolean` to work properly. Previous all were
returning false. Ditto all trace/debug/.../fatal methods.

- Allow an optional `msg` and arguments to the `log.info(<Error> err)` logging
form. For example, before:

log.debug(my_error_instance) // good
log.debug(my_error_instance, "boom!") // wasn't allowed

Now the latter is allowed if you want to expliciting set the log msg. Of course
this applies to all the `log.{trace|debug|info...}()` methods.

- `bunyan` cli output: clarify extra fields with quoting if empty or have
spaces. E.g. 'cmd' and 'stderr' in the following:

[2012-02-12T00:30:43.736Z] INFO: mo-docs/43194 on banana.local: buildDocs results (req_id=185edca2-2886-43dc-911c-fe41c09ec0f5, route=PutDocset, error=null, stderr="", cmd="make docs")

- Fix/guard against unintended inclusion of some files in npm published package
due to <https://github.com/isaacs/npm/issues/2144>

- Internal: starting jsstyle usage.
- Internal: add .npmignore. Previous packages had reams of bunyan crud in them.

- Add 'pid' automatic log record field.

- Add 'client_req' (HTTP client request) standard formatting in `bunyan` CLI
default output.
- Improve `bunyan` CLI default output to include *all* log record keys. Unknown keys
are either included in the first line parenthetical (if short) or in the indented
subsequent block (if long or multiline).