add license for real, fix pausing

Hint/AppDelegate.swift

@@ -63,6 +63,7 @@ class AppDelegate: NSObject, NSApplicationDelegate {
     }
     
     @IBAction func actionResume(_ sender: NSMenuItem) {
+        pauseInterval = 0
         scheduler.resume()
     }
     

Hint/Scheduler.swift

@@ -39,7 +39,7 @@ class Scheduler: NSObject {
         
         paused = true
         
-        if seconds == nil {
+        if seconds == nil || seconds! == 0 {
             DLog("paused until resumed")
             return
         }

LICENSE.txt

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2016-2017 Chris Smith
+
+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.