fix inconsistency with duplicated Constants.h file
validate project settings for Xcode 5
migrate to XCTest (from SenTest)
refactor to use ARC
remove warnings
refactor to modern obj-c syntax
Merge branch 'master' of https://github.com/sdesimone/ML4iOS into sdesimone-master

Conflicts:
	ML4iOS.xcodeproj/project.pbxproj
	ML4iOS/include/Constants.h
t push origin master Merge branch 'sdesimone-master'