Correcting a mistake in the documentation.

This example is documenting the exclude method, so we should get rid of the `where` clause here.
Fix documentation reference for Repository#create

The documentation for the `Repository#create` method was referencing the `Repository#persist` method
Updating typo (retun -> return)
Replacing Lotus::View with Lotus::Model
Fixing typos and tidying up grammar

This is a grab bag of fixes. Each one could be submitted individually,
but I opted to include them all in one commit.
specify the LICENSE as markdown for prettier GitHub printing
Mention Lotus::Repository.find method in README.md

Seems that `Lotus::Repository.find` is missing by mistake, since it's a significant one.
Pass list of attributes to `attr_accessor`
Just extend the base class. No need to class_eval
Merge pull request #10 from splattael/refactor

Refactor Lotus::Entity
Merge pull request #3 from mattdbridges/master

Fix documentation reference for Repository#create
Merge pull request #4 from ricardovaleriano/documentation_correction

Correcting a mistake in the documentation.
Merge pull request #5 from jeremyf/fixing-typo

Updating typo (retun -> return)
Merge pull request #6 from jeremyf/fixing-typo-reference

Replacing Lotus::View with Lotus::Model
Merge pull request #7 from jeremyf/fixing-typos-and-tidying-up-grammar

Fixing typos and tidying up grammar
Merge pull request #8 from cyril/patch-1

specify the LICENSE as markdown for prettier GitHub printing
Merge pull request #9 from sidonath/patch-1

Mention Lotus::Repository.find method in README.md
Iterate over each value using `each_value`
Merge pull request #11 from splattael/each

Iterate over each value using `each_value`
Tidying up Entity documentation.

The entity documentation was a bit off. Including Lotus::Model did
not create the three defined methods.