Make Command accessible from Context
Customizable command not found function
Add SkipFlagParsing option to Command
Make StringSliceFlag usage text consistent

This fixes StringSliceFlag default usage text to be consistent with
IntegerSliceFlag.

Before:

   -f []	`-f option -f option` port forwarding rules

After:

   -f '-f option -f option'	port forwarding rules

Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
Merge pull request #82 from zenoss/upstream/feature/recursive-subcommands

A better version of infinite subcommands
Merge pull request #74 from Winslett/context-accessible-command

Make Command accessible from Context
Merge pull request #75 from Winslett/command-not-found

Customizable command not found function
Merge pull request #80 from wendorf/master

Add SkipFlagParsing option to Command
Merge pull request #83 from penberg/string-slice-usage-text

Make StringSliceFlag usage text consistent
Merge branch 'master' of github.com:zenoss/cli into feature/serviced-updates