* Add font family support on bottom tabs

* import missing classes

* import missing class

* update document

* Added an additional navigation event for the press of an already selected tab

* Renamed new navigation event to bottomTabReselected

This is a quick hack to address issue where the expended color was
set after pop even if screen was collapsed.

No need to check it twice

* wix react-native open source json config file

* Update openSourceIsAwesome.json

Issue #542 caused an issue where setting the `tabBarButtonColor` would override the `tabBarSelectedButtonColor`. This fixes that.

closes #851

* Initial commit

* Initial commit

* Clean-up title

When snackbar cta is clicked - event is dispatched with the specified eventId

Since fab set dynamically wasn’t saved in screen params, when returning
to that screen the fab wasn't displayed.

This commit also enables setting fab dynamically in modals

* Update README.md

* Update README.md

There was no link for migration to v2 and changelog. It looks bad when dead links are on main readme, so I removed the link.

* Save titleBarHidden in screenParams when toggling TitleBar

* empty commit

Closes #681

iOS support orientation changes

When a view with collapsing header was fully expended, scrolling down
and quickly releasing the finger would couse the list to "bounce back".
Since the view can collapse only if its scrollY amount is less then the
scaled touch slop - the view didn't collapse and instead, scroll was
enabled.

closes #661

* [android] Basic implementation of orientation change event and getter

#dasdsa

* [android] Check if fabAnimator is not null

* [android] Add configChanges prop to NavigationActivity in AndroidManifest

* [android] Fix duplicate declaration of onConfigurationChange

* [android] Use EventEmitter class to dispatch orientation change events

* Adds iOS callback for viewWillAppear/didAppear e.t.c.

* Adds in screen events on Android

* Fixed issue with rightButtons getting ignored in preference for empty Screen buttons

* Android screen lifecycle

This commit is contains a few changes and enhancements to the PR made by simon:

* Use getEventEmitter instead of sendNavigatorEvent
* Dispatch willDisappear and didDisappear events when pushing screens
* Dispatch willAppear and didAppear events when popping screen

fixes #800 #797

collapsingToolBarExpendedColor - determines the TitleBar color in expended mode
showTitleWhenExpended - defaults to true when expended color is defined.