Minor tweak to set_nav_bar_button
Slimmed down README
Changed on_presented to on_present to be more consistent

@silasj review.
Added What's New in version 1.0 section
Merge conflict
Version 1.0 bump
added failing test for missing FormotionScreen title
Removed _tables
Removed _table that somehow made its way back in
Merge branch 'version-1.0' into edge
Fixed issue #74 reported by @jeanmartin
Merge pull request #215 from clearsightstudio/edge

Quick fix for Formotion issue
Remove indexable per @ainame
tab_bar_item class method

I know I said that we were in a feature freeze, but this is necessary
due to the on_load changes we made.

Plus:

* Moved module class method inclusions, made possible by loading
ScreenModule in every Screen type. This is cleaner for class method
inclusion, although there's still some room for improvement.
* Added unit tests for the tab bar and tab bar items
* Moved `on_init` after `screen_setup` which makes more sense.
Merge pull request #219 from clearsightstudio/tab_bar_item_class_method

tab_bar_item class method
Modify WebScreen test to fail.
Fix webscreen html method and tests.
Merge pull request #224 from clearsightstudio/fix-webscreen-html-method

Fix webscreen html method
Merge pull request #214 from clearsightstudio/version-1.0

Version 1.0
Add a check to see if the table class responds to get_indexable