Merge pull request #20 from Bowman74/master

#19 Added missing WP ImageButton and Work in Progress (WIP) version of iOS ImageButton
IDevice interface added with implementations

Includes information for display at runtime; dimensions, pixels,
density. Also phone service interface with service to start a native
phone call dialog.
Fixed namespace clash with Xamarin.Forms.Device
Merge pull request #22 from Bowman74/master

#19, more changes for iOS buttons.
WIP AutoComplete control

A initial commit of a xaml control of a textview with autocomplete
similar to search, one can bind a collection of Options, a execute
command for button.
It’s missing a way to specifyy a image button
Also added a generic relay command.
Merge branch 'master' of https://github.com/XForms/XForms-Toolkit
Fix bug and updated sample
Update sample with DeviceInfoPage
Update README.md
Update sample with DeviceInfoPage
Improvements AutoComplete
Update README.md

added more info
Update README.md
Update README.md
Update README.md
Add nuget packaging for windows phone
Remove unused property
Added DI interfaces for Resolver & Container

Simple Resolver interface acts as a generic resolver that can be
implemented using 3rd party DI containers. Hopefully this can somehow
be used to extend Xamarin DependencyResolver.

I will put in some 3rd party wrappers into Plugins project later on. I
have tested about 5 of them and some are PCL compatible while others
only work with WP8 and/or Android. There is a simple container
implementation as well to give a little more features than
Xamarin.Forms container.
Merge branch 'master' of https://github.com/XForms/XForms-Toolkit

Conflicts:
	samples/XForms.Toolkit.Sample/App.cs
Added Battery service to device

Battery service added.
Device page added to the tabs with extended device information on the
second carousel page: display info + battery info