Basic Bevy Camera

Based on: bevyengine/bevy#4458

Depends on bevy 0.15

cargo run --example 3d_scene

Usage:

[dependencies]
bevy_basic_camera = { git = "https://github.com/DGriffin91/bevy_basic_camera" }

use bevy_basic_camera::{CameraController, CameraControllerPlugin};

app.add_plugin(CameraControllerPlugin)

// camera
commands.spawn(Camera3dBundle::default()).insert(CameraController::default());