Add buttons for pagination

These currently live in a tr with a colspan of the full table - this
feels less than good, but I'd like to see if we can keep everything
generated by Reactable inside the <table>.
Implemented pagination

Implemented pagination. This adds two arguments to the `Reactable.Table`
component - `pagination`, a boolean, and `itemsPerPage`, an integer.
Both are optional. If `pagination` is `true`, a `<tr>` with `colspan`
equal to the number of columns in the table and `class="pagination"`
will be rendered after all the content rows with an
`<a class="page-button">` for each page.

From an implementation standpoint this is a pretty naive approach at
the moment, as we're not doing any caching of the children of the table
between state changes.
Update README with usage information for current functionality
Clean up examples in README a bit
Version 0.1.0
Failing unit tests for passing children to <Table>

This is a set of failing tests for passing <Tr> children to the <Table>
instead of a data array.
Fix errors in README
Merge branch 'master' of github.com:glittershark/reactable into feature/additional_apis
Making nested Trs work
Making tests a little more robust by checking for thead
Merge pull request #1 from lofiinterstate/feature/additional_apis

Make it possible to nest Trs in <Table> definition
Update README with new nested Tr API
Merge branch 'feature/additional_apis'
Copy-editing in README
Change raw link in readme to point to raw file
Changing the pagination API to only require the itemsPerPage property and not pagination.  Also namespacing react classes and moving pagination to its own tbody
Local-scope reactable elements

Tr, Td, Thead, etc. weren't local scoped to the anonymous Reactable
builder function, but bits of code were referencing them like they were.
Merge branch 'feature/pagination' of https://github.com/lofiinterstate/reactable into feature/pagination

Conflicts:
	build/reactable.js
	src/reactable.jsx
Update README with new pagination API
Merge branch 'feature/pagination'