Rejigged argument handling. .action can now receive an extension name as the method.
Got injectExpandedChainDataAsArguments working
v1.5.0 August 3, 2014

- `chain.action(method, taskOptions)` can now receive an extension name as the method, allowing you to change the behaviour of an existing extension by configuring the options for its execution
- Removed the internal `prependResultToArguments` task option, and added the public `args` task option. Use `Chainy.injectChainDataAsArgument` and `Chainy.injectExpandedChainDataAsArguments` as special argument items that do what their names suggest.
- Updated dependencies