Merge pull request #13 from pinterest/addOlderSDKs

Add older sdks

Author: garrettmoon

.travis.yml

@@ -1,5 +1,14 @@
 # reference: http://www.objc.io/issue-6/travis-ci.html
 
+# whitelist
+branches:
+  only:
+    - master
 language: objective-c
+env:
+    matrix:
+    - TEST_SDK=iphonesimulator7.0
+    - TEST_SDK=iphonesimulator7.1
+    - TEST_SDK=iphonesimulator8.1
 script:
-- xctool test -workspace Example/PINRemoteImage.xcworkspace -scheme PINRemoteImage -sdk iphonesimulator ONLY_ACTIVE_ARCH=NO
+- xctool test -test-sdk $TEST_SDK -workspace Example/PINRemoteImage.xcworkspace -scheme PINRemoteImage ONLY_ACTIVE_ARCH=NO