Adding travis support

Author: Coeur

.gitignore

@@ -1 +1,8 @@
+# Xcode
 **/xcuserdata/**
+
+# AppCode
+.idea/
+
+# CocoaPods
+Pods/

.travis.yml

@@ -0,0 +1,50 @@
+# references:
+# * https://www.objc.io/issues/6-build-tools/travis-ci/
+# * https://github.com/supermarin/xcpretty#usage
+
+matrix:
+  include:
+    - osx_image: xcode10.1
+      env: DESTINATION="iPad Pro (11-inch) (12.1)" SWIFT_VERSION="4.2"
+      
+    - osx_image: xcode10
+      env: DESTINATION="iPhone XS (12.0)" SWIFT_VERSION="4.2"
+      
+    - osx_image: xcode9.4
+      env: DESTINATION="iPhone X (11.4)" SWIFT_VERSION="4.0"
+      
+    - osx_image: xcode9.3
+      env: DESTINATION="iPhone 8 (11.0.1)" SWIFT_VERSION="4.0"
+      
+    - osx_image: xcode9.2
+      env: DESTINATION="iPhone 7 Plus (10.3.1)" SWIFT_VERSION="4.0"
+      
+    - osx_image: xcode9.1
+      env: DESTINATION="iPhone 6s Plus (9.3)" SWIFT_VERSION="4.0"
+      
+    - osx_image: xcode9
+      env: DESTINATION="iPhone 6 Plus (8.4)" SWIFT_VERSION="4.0"
+
+language: objective-c
+cache: cocoapods
+podfile: Example/Podfile
+before_install:
+- gem install cocoapods # Since Travis is not always on latest version
+- gem update xcodeproj # https://github.com/CocoaPods/CocoaPods/issues/7835
+- pod install --repo-update --project-directory=Example
+# Grepping destination device udid
+- DESTINATION_UDID=$(instruments -s devices | grep "$DESTINATION \[" | sed -E 's/.*\[([0-9A-F-]+)\].*/\1/g')
+# Prelaunching simulator to avoid timeout https://github.com/travis-ci/travis-ci/issues/6422
+# (not working with osx_image: xcode10 and newer?)
+#- open -a "simulator" --args -CurrentDeviceUDID $DESTINATION_UDID
+script:
+- set -o pipefail && xcodebuild test
+ `` -enableCodeCoverage YES
+ `` -workspace Example/CollectionViewCenteredFlowLayout.xcworkspace
+ `` -scheme Example
+ `` -sdk iphonesimulator
+ `` -destination "id=$DESTINATION_UDID"
+ `` ONLY_ACTIVE_ARCH=NO
+ `` | xcpretty
+- echo $SWIFT_VERSION > .swift-version
+- pod lib lint

CollectionViewCenteredFlowLayout.podspec

@@ -13,7 +13,7 @@ Pod::Spec.new do |s|
   s.screenshots  = 'https://raw.githubusercontent.com/coeur/CollectionViewCenteredFlowLayout/master/screenshot.png'
   s.license      = { :type => "MIT", :file => "LICENSE" }
   s.authors      = { 'Antoine Cœur' => '' }
-  s.social_media_url   = 'http://twitter.com/adigitalknight'
+  s.social_media_url   = 'https://twitter.com/adigitalknight'
   s.platform     = :ios, '8.0'
   s.source       = { :git => 'https://github.com/coeur/CollectionViewCenteredFlowLayout.git', :tag => version }
   s.source_files  = 'CollectionViewCenteredFlowLayout/*.swift'

CollectionViewCenteredFlowLayout/CollectionViewCenteredFlowLayout.swift

@@ -1,4 +1,3 @@
-
 // Copyright (c) 2017 Cœur
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy of

Example/.swiftlint.yml

@@ -0,0 +1,53 @@
+# Find all the available rules by running:
+# Pods/SwiftLint/swiftlint rules
+
+included:
+- ../CollectionViewCenteredFlowLayout
+- .
+
+excluded:
+- Carthage
+- Pods
+
+disabled_rules:
+  - line_length
+  - file_length
+  - force_cast
+  - force_try
+  - comma
+  - trailing_comma
+
+opt_in_rules:
+#performance:
+  - empty_count
+  - empty_string
+  - first_where
+  - last_where
+#lint:
+  - overridden_super_call
+  - prohibited_super_call
+  - yoda_condition
+  - unused_import
+  - unused_private_declaration
+#idiomatic:
+  - redundant_nil_coalescing
+  - fatal_error_message
+  - nimble_operator
+#style:
+  - operator_usage_whitespace
+  - number_separator
+  - switch_case_on_newline
+  - closure_spacing
+  - conditional_returns_on_newline
+  - unneeded_parentheses_in_closure_argument
+  - vertical_parameter_alignment_on_call
+  - implicit_return
+  - collection_alignment
+
+vertical_whitespace:
+ max_empty_lines: 2
+trailing_whitespace:
+ ignores_empty_lines: true
+ ignores_comments: true
+identifier_name:
+ min_length: 1