[Travis] Replace xctool with plain xcodebuild

.travis.yml

@@ -1,6 +1,32 @@
 language: objective-c
-osx_image: xcode7.2
-script: script/cibuild
+xcode_workspace: Mantle.xcworkspace
+git:
+  submodules: false
+before_install:
+  - git submodule update --init --recursive
+script:
+  - set -o pipefail
+  - xcodebuild $XCODE_ACTION 
+      -workspace "$TRAVIS_XCODE_WORKSPACE"
+      -scheme "$TRAVIS_XCODE_SCHEME"
+      -sdk "$XCODE_SDK"
+      -destination "$XCODE_DESTINATION"
+      RUN_CLANG_STATIC_ANALYZER=NO
+      | xcpretty
+matrix:
+  include:
+    - xcode_scheme: "Mantle Mac"
+      osx_image: xcode7.2
+      env:
+        - XCODE_ACTION=test
+        - XCODE_SDK=macosx
+        - XCODE_DESTINATION="arch=x86_64"
+    - xcode_scheme: "Mantle iOS"
+      osx_image: xcode7.2
+      env:
+        - XCODE_ACTION=test
+        - XCODE_SDK=iphonesimulator
+        - XCODE_DESTINATION="name=iPhone 6s"
 notifications:
   email: false
   campfire:

README.md

@@ -479,7 +479,7 @@ Mantle supports OS X 10.9+ and iOS 8.0+.
 To add Mantle to your application:
 
  1. Add the Mantle repository as a submodule of your application's repository.
- 1. Run `script/bootstrap` from within the Mantle folder.
+ 1. Run `git submodule update --init --recursive` from within the Mantle folder.
  1. Drag and drop `Mantle.xcodeproj` into your application's Xcode project. Unfortunately, an [Xcode bug](http://www.openradar.appspot.com/19676555) means you should probably not add it to a workspace.
  1. On the "General" tab of your application target, add `Mantle.framework` to the "Embedded Binaries".