Add new pods.

- RxSwift
- RXCocoa

Pods/RxSwift/RxSwift/Observable.swift

@@ -0,0 +1,46 @@
+//
+//  Observable.swift
+//  RxSwift
+//
+//  Created by Krunoslav Zaher on 2/8/15.
+//  Copyright © 2015 Krunoslav Zaher. All rights reserved.
+//
+
+import Foundation
+
+/// A type-erased `ObservableType`. 
+///
+/// It represents a push style sequence.
+public class Observable<Element> : ObservableType {
+    /// Type of elements in sequence.
+    public typealias E = Element
+    
+    init() {
+#if TRACE_RESOURCES
+        let _ = Resources.incrementTotal()
+#endif
+    }
+    
+    public func subscribe<O: ObserverType>(_ observer: O) -> Disposable where O.E == E {
+        abstractMethod()
+    }
+    
+    public func asObservable() -> Observable<E> {
+        return self
+    }
+    
+    deinit {
+#if TRACE_RESOURCES
+        let _ = Resources.decrementTotal()
+#endif
+    }
+
+    // this is kind of ugly I know :(
+    // Swift compiler reports "Not supported yet" when trying to override protocol extensions, so ¯\_(ツ)_/¯
+
+    /// Optimizations for map operator
+    internal func composeMap<R>(_ selector: @escaping (Element) throws -> R) -> Observable<R> {
+        return Map(source: self, transform: selector)
+    }
+}
+