[Build] Update build script to use iOS 10.1 (Xcode 8.1).

.travis.yml

@@ -2,7 +2,7 @@ language: objective-c
 cache:
   - bundler
   - cocoapods
-osx_image: xcode8
+osx_image: xcode8.1
 git:
   depth: 10
 before_install:

build.sh

@@ -1,8 +1,8 @@
 #!/bin/bash
 
 # **** Update me when new Xcode versions are released! ****
-PLATFORM="platform=iOS Simulator,OS=10.0,name=iPhone 7"
-SDK="iphonesimulator10.0"
+PLATFORM="platform=iOS Simulator,OS=10.1,name=iPhone 7"
+SDK="iphonesimulator10.1"
 
 
 # It is pitch black.