Add license, add copyright comments, fill up readme

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2022 Pure Native
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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 # SwiftDI
 
-A description of this package.
+Lightweight dependency injection library.
+
+## Requirements
+
+- Swift 5.5 or newer
+- iOS 11.0 or newer
+
+## Installation
+
+You can install this package using [Swift Package Manager](https://www.swift.org/package-manager/) by adding the following line to the `dependencies` in your `Package.swift` file:
+
+```swift
+.package(url: "https://github.com/purenative/SwiftDI.git", .branch("main"))
+```
+
+## Contributing
+
+Don't forget to open an issue if you found a bug or have a question. Feel free to fork this repository and open a pull request if you fixed an existing feature or implemented a new one.
+
+## License
+
+SwiftDI is released under the MIT license. See LICENSE for details.

Sources/SwiftDI/Private/DIContainerStorage.swift

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+//
+// DIContainerStorage.swift
+// SwiftDI
+//
+// MIT License
+//
+// Copyright (c) 2022 Pure Native
+//
+
+import Foundation
+
 final class DIContainerStorage<OP: DIObjectProvider> {
 
     private var providers = [DIEntityTypeKey: OP]()

Sources/SwiftDI/Private/DIEntityTypeKey.swift

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+//
+// DIEntityTypeKey.swift
+// SwiftDI
+//
+// MIT License
+//
+// Copyright (c) 2022 Pure Native
+//
+
+import Foundation
+
 final class DIEntityTypeKey: Hashable {
 
     let entityName: String

Sources/SwiftDI/Private/DIFabricObjectProvider.swift

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+//
+// DIFabricObjectProvider.swift
+// SwiftDI
+//
+// MIT License
+//
+// Copyright (c) 2022 Pure Native
+//
+
+import Foundation
+
 final class DIFabricObjectProvider: DIObjectProvider {
 
     static var scope: DIObjectScope {

Sources/SwiftDI/Private/DIInstanceObjectProvider.swift

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+//
+// DIInstanceObjectProvider.swift
+// SwiftDI
+//
+// MIT License
+//
+// Copyright (c) 2022 Pure Native
+//
+
+import Foundation
+
 final class DIInstanceObjectProvider: DIObjectProvider {
 
     private var _instance: Any!

Sources/SwiftDI/Private/DIObjectProvider.swift

@@ -1,3 +1,14 @@
+//
+// DIObjectProvider.swift
+// SwiftDI
+//
+// MIT License
+//
+// Copyright (c) 2022 Pure Native
+//
+
+import Foundation
+
 protocol DIObjectProvider {
 
     static var scope: DIObjectScope { get }

Sources/SwiftDI/Public/DIContainer.swift

@@ -1,3 +1,14 @@
+//
+// DIContainer.swift
+// SwiftDI
+//
+// MIT License
+//
+// Copyright (c) 2022 Pure Native
+//
+
+import Foundation
+
 public class DIContainer {
 
     private let fabricStorage = DIContainerStorage<DIFabricObjectProvider>()

Sources/SwiftDI/Public/DIObjectScope.swift

@@ -1,3 +1,14 @@
+//
+// DIObjectScope.swift
+// SwiftDI
+//
+// MIT License
+//
+// Copyright (c) 2022 Pure Native
+//
+
+import Foundation
+
 public enum DIObjectScope: String {
 
     case fabric

Tests/SwiftDITests/SwiftDITests.swift

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+//
+// SwiftDITests.swift
+// SwiftDI
+//
+// MIT License
+//
+// Copyright (c) 2022 Pure Native
+//
+
 import XCTest
 @testable import SwiftDI