Adding linux support for the Dualshock 4
Project updates.
Merge branch 'develop' of git://github.com/rje/InControl into rje-develop

Conflicts:
	Assembly-CSharp-Editor-vs.csproj
	Assembly-CSharp-Editor.csproj
	Assembly-CSharp-vs.csproj
	Assembly-CSharp.csproj
	InControl-csharp.sln
	InControl.sln
	ProjectSettings/Physics2DSettings.asset
Support for PS4 controller on Linux (issue #33)
Mad Catz support on Mac (issue #28)
Increased number of analogs to 20 (issue #29)

Unity3D bumped this value in version 4.3.3
Updated README.
Restructuring the project to be package friendly.
Automatically generate the InputManager.asset file when necessary.
Logitech F310 support on Windows and Mac (#40)
Project restructuring.
README updates.
Updated README.
Potential fix for Xbox 360 controller trigger issues on Windows (#30).
Fixed regression in value mapping.
InputDevice can have a sort order.
XInput support.
XInput support on Windows (#16)
Executioner X support for Mac (#47)
Logitech Dual Action support on Windows (#48)