Merge pull request #6 from josephlord/revertOptionToStoreClosureRathe…

…rThanConcreteInstances

Revert option to store closure rather than concrete instances and 1.0 preparations

Set closure option to override with a computed rather than stored ins…

…tance. (#4)

* Add option to use subscript to set a closure on the InjectionValues to allow factories or computed values to be added rather than just instantiated objects.

* Change from subscript to set func to override with a closure so the useless getter is no longer required. Update documentation and refine some of it.

* Documentation enhancements. Unfortunately it has now broken the 100 line mark so the Readme might need an update

* Update Readme with increased line count.

Co-authored-by: Joseph Lord <joseph.lord@pulselive.com>

Add resetToDefault function, compile fail tests (commented out) and a…

… Readme update.

Add the library, tests for the happy paths and a very short Readme.