Add PromiseKit dependency

- Added PromiseKit dependency

Carthage/Checkouts/PromiseKit/Extensions/EventKit/Tests/Entitlements.plist

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>com.apple.private.tcc.allow</key>
+    <array>
+        <string>kTCCServiceAddressBook</string>
+        <string>kTCCServiceCalendar</string>
+        <string>kTCCServicePhotos</string>
+    </array>
+</dict>
+</plist>

Carthage/Checkouts/PromiseKit/Extensions/EventKit/Tests/TestEventKit.swift

@@ -0,0 +1,19 @@
+import PMKEventKit
+import PromiseKit
+import EventKit
+import XCTest
+
+class Test_EventKit_Swift: XCTestCase {
+    func test() {
+        #if os(OSX)
+            //FIXME can't make this succeed on Travis :(
+            // needs Entitlements, but then I can't get it to sign
+            // so, we'll just test linkage
+            EKEventStoreRequestAccess()
+        #else
+            let ex = expectation(description: "")
+            EKEventStoreRequestAccess().ensure(ex.fulfill)
+            waitForExpectations(timeout: 30)
+        #endif
+    }
+}