Created Setting up (markdown)

Setting-up.md

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+The simplest way to initialize CoreStore is to add a default store to the default stack:
+```swift
+CoreStore.addSQLiteStore()
+```
+This one-liner does the following:
+- Triggers the lazy-initialization of `CoreStore.defaultStack` with a default `DataStack`
+- Sets up the stack's `NSPersistentStoreCoordinator`, the root saving `NSManagedObjectContext`, and the read-only main `NSManagedObjectContext`
+- Adds an automigrating SQLite store in the *"Application Support"* directory with the file name *"[App bundle name].sqlite"*
+- Creates and returns the `NSPersistentStore` instance on success, or an `NSError` on failure
+
+For most cases, this configuration is usable as it is. But for more hardcore settings, refer to this extensive example:
+```swift
+let dataStack = DataStack(modelName: "MyModel") // loads from the "MyModel.xcdatamodeld" file
+
+switch dataStack.addInMemoryStore(configuration: "Config1") { // creates an in-memory store with entities from the "Config1" configuration in the .xcdatamodeld file
+case .Success(let persistentStore): // persistentStore is an NSPersistentStore instance
+    println("Successfully created an in-memory store: \(persistentStore)"
+case .Failure(let error): // error is an NSError instance
+    println("Failed creating an in-memory store with error: \(error.description)"
+}
+
+switch dataStack.addSQLiteStore(
+    fileURL: sqliteFileURL, // set the target file URL for the sqlite file
+    configuration: "Config2", // use entities from the "Config2" configuration in the .xcdatamodeld file
+    automigrating: true, // automatically run lightweight migrations or entity policy migrations when needed
+    resetStoreOnMigrationFailure: true) { // delete and recreate the sqlite file when migration conflicts occur (useful when debugging)
+case .Success(let persistentStore): // persistentStore is an NSPersistentStore instance
+    println("Successfully created an sqlite store: \(persistentStore)"
+case .Failure(let error): // error is an NSError instance
+    println("Failed creating an sqlite store with error: \(error.description)"
+}
+
+CoreStore.defaultStack = dataStack // pass the dataStack to CoreStore for easier access later on
+```
+
+Note that you dont need to do the `CoreStore.defaultStack = dataStack` line. You can just as well hold a stack like below and call all methods directly from the `DataStack` instance:
+```swift
+class MyViewController: UIViewController {
+    let dataStack = DataStack(modelName: "MyModel")
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        self.dataStack.addSQLiteStore()
+    }
+    func methodToBeCalledLaterOn() {
+        let objects = self.dataStack.fetchAll(From(MyEntity))
+        println(objects)
+    }
+}
+```
+The difference is when you set the stack as the `CoreStore.defaultStack`, you can call the stack's methods directly from `CoreStore` itself:
+```swift
+class MyViewController: UIViewController {
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        CoreStore.addSQLiteStore()
+    }
+    func methodToBeCalledLaterOn() {
+        let objects = CoreStore.fetchAll(From(MyEntity))
+        println(objects)
+    }
+}
+```
+
+
+## Contents
+- [[Architecture]]
+- [[Setting up]]
+- [[Saving and processing transactions]]
+- [[Fetching and querying]]
+- [[Logging and error handling]]
+- [[Observing changes and notifications]]