* Couchbase new metrics for buckets
* updated
* update to simplify two different modes.
* cleanup code
* linter telling me to fix things I didn't do
* add include/exclude filter
* update sample config
* appease the linter
* Update README.md
* make all metrics configurable, defaults as just 'basic bucket metrics'
* check error in test
Many of the examples provided within documentation are using a single
dash for the command line arguments, but the telegraf executable
explicitly has two dashes.
There are also some inconsistencies with the ordering of the command
line argument examples. I've ordered them so that the examples will
show: config, config-directory, input-filter, test