Update build script and dependencies

Author: CodaFi

.travis.yml

@@ -1,9 +1,12 @@
 language: objective-c
-osx_image: beta-xcode6.3
+osx_image: xcode7
+
+before_install:
+    - gem install xcpretty-travis-formatter --no-rdoc --no-ri --no-document --quiet
 
 install:
     - git submodule update -i --recursive
 
 script:
-    - xctool -project Concurrent.xcodeproj -scheme Concurrent -sdk macosx ONLY_ACTIVE_ARCH=NO clean build test
-    - xctool -project Concurrent.xcodeproj -scheme Concurrent-iOS -sdk iphonesimulator ONLY_ACTIVE_ARCH=NO clean build test
+    - set -o pipefail && xcodebuild -project Concurrent.xcodeproj -scheme Concurrent -sdk macosx ONLY_ACTIVE_ARCH=NO clean build test | xcpretty -c -f `xcpretty-travis-formatter`
+    - set -o pipefail && xcodebuild -project Concurrent.xcodeproj -scheme Concurrent-iOS -sdk iphonesimulator ONLY_ACTIVE_ARCH=NO clean build test | xcpretty -c -f `xcpretty-travis-formatter`