Added stub for 'init' command

Bumped up version number in package.json
Added some subcommand documentation to README.md
Modified coffeeCli.coffee to process an 'init' subcommand
Modified coffeeCli.coffee to pass argument options (i.e.: --kitchen /path/to) to commands
Created new error.coffee to handle common error messages
Added some baking logic to kitchen.coffee
Implemented init command, some recipe format validation

Added 'example' directory to .gitignore; for now
Bumped up version number in package.json
Modified coffeeCli.coffee to pass init command on to kitchen.coffee
Modified kitchen.coffee to initialize kitchen configurations
Modified error.coffee to supply specific error messages for recipe files
Implemented add pantry command, added stub for add ingredient command

Bumped up version number in package.json
Added documentation for add commands to README.md
Modified coffeeCli.coffee
- Added help text for add command
- Added argument parsing for add command
- Added calls to kitchen.coffee functions for add commands
Modified error.coffee to add new badJson error for invalid JSON
Modified kitchen.coffee to add pantry to configuration
Added useful.coffee to supply convenience methods