Added support for macOS, tvOS, and watchOS. Added Carthage support. Restructured project hierarchy. Added additional test coverage. Added support for automated building and code coverage reporting

Author: Joe Newton

.gitignore

@@ -1,41 +1,2 @@
-# OS X
-.DS_Store
-
-# Xcode
-build/
-*.pbxuser
-!default.pbxuser
-*.mode1v3
-!default.mode1v3
-*.mode2v3
-!default.mode2v3
-*.perspectivev3
-!default.perspectivev3
-xcuserdata/
-*.xccheckout
-profile
-*.moved-aside
-DerivedData
-*.hmap
-*.ipa
-
-# Bundler
-.bundle
-
-# Add this line if you want to avoid checking in source code from Carthage dependencies.
-# Carthage/Checkouts
-
-Carthage/Build
-
-# We recommend against adding the Pods directory to your .gitignore. However
-# you should judge for yourself, the pros and cons are mentioned at:
-# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-ignore-the-pods-directory-in-source-control
-# 
-# Note: if you ignore the Pods directory, make sure to uncomment
-# `pod install` in .travis.yml
-#
-# Pods/
-
-Example/KeyValueObservation.xcodeproj/project.xcworkspace
-IDEWorkspaceChecks.plist
-Example/Pods
+KeyValueObservation.xcodeproj/project.xcworkspace
+KeyValueObservation.xcodeproj/xcuserdata

.travis.yml

@@ -1,14 +1,17 @@
-# references:
-# * https://www.objc.io/issues/6-build-tools/travis-ci/
-# * https://github.com/supermarin/xcpretty#usage
-
-osx_image: xcode7.3
+os: osx
 language: objective-c
-# cache: cocoapods
-# podfile: Example/Podfile
-# before_install:
-# - gem install cocoapods # Since Travis is not always on latest version
-# - pod install --project-directory=Example
+osx_image: xcode10.2
+xcode_project: KeyValueObservation.xcodeproj
+
+before_install:
+  - gem install cocoapods
+
 script:
-- set -o pipefail && xcodebuild test -enableCodeCoverage YES -workspace Example/KeyValueObservation.xcworkspace -scheme KeyValueObservation-Example -sdk iphonesimulator9.3 ONLY_ACTIVE_ARCH=NO | xcpretty
-- pod lib lint
+  - set -o pipefail && travis_retry xcodebuild -scheme "KeyValueObservation" -destination "platform=iOS Simulator,name=iPhone XS Max" -configuration Test ONLY_ACTIVE_ARCH=YES -enableCodeCoverage YES test
+  - set -o pipefail && travis_retry xcodebuild -scheme "KeyValueObservation tvOS" -destination "platform=tvOS Simulator,name=Apple TV 4K" -configuration Test ONLY_ACTIVE_ARCH=YES -enableCodeCoverage YES test
+  - set -o pipefail && travis_retry xcodebuild -scheme "KeyValueObservation watchOS" -destination "platform=watchOS Simulator,name=Apple Watch Series 4 - 44mm" -configuration Debug ONLY_ACTIVE_ARCH=YES
+  - set -o pipefail && travis_retry xcodebuild -scheme "KeyValueObservation macOS" -destination "platform=macOS" -configuration Test ONLY_ACTIVE_ARCH=YES -enableCodeCoverage YES test
+  - pod lib lint
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)