Build with carthage on new release

Author: hamchapman

.travis.yml

@@ -36,6 +36,18 @@ before_install:
 install:
   - pod update
   - pod install
+before_deploy:
+  - carthage build --no-skip-current
+  - carthage archive PusherSwift
+deploy:
+  provider: releases
+  api_key:
+    secure: cjodA0I5fTEU60M+W1NNCj18EpL7yt3uxLN1aeexN33HfRoo153oi4jV/FWlPtQ4QC5FhFF+Nbc69V2paOSrI4iht+UB2Hb0jYTuHWv8ecYa33GFksl7zD9BCf8D3RZqIagTzJC7Vf0FqKKlspZMwIMAL02Z5uwsp5h4Zjrq8lo=
+  file: PusherSwift.framework.zip
+  skip_cleanup: true
+  on:
+    repo: pusher/pusher-websocket-swift
+    tags: true
 script:
   - set -o pipefail
   - xcodebuild -version