Documentation Improvements

[ellbee]

Things to add to the documentation:

• How to use a Factory function to create selectors with parameters
• Document usage of the exported memoize function (if we add it)
• Explain how default memoize works and its limitations
• Using Reselect without Redux
• When you might want to use a different valueEquals function
• Rules of thumb when creating selectors
• Unit testing selectors (Add documentation about how to test #34)

Anything else?

[ellbee]

Added to docs for 1.0.0 release