* enable travis CI tests for swift, objc, move some tests to circleci
* fix comment in xml file
* use xcode8.3
* use ruby 2.2.5
* fix objc core data pom.xml
* use cocoapods 1.2.1
* use xcpretty for clearer test results
* fix pom with relative path to script
* comment out objc test
* fix xcpretty exit code
* add && exit ${PIPESTATUS[0]} for swift3 xcodebuild script
* use xcode 8.2
* update promisekit version for swift 2x, 3x
* add pod repo update
* remove Pods directory
* update swift dependencies to the latest version
* update podfile.lock
* rollback Alamofire to 4.0 for swift3
* fix swift3 rxswift api cliiet
* fix testDeletePet test in Swift3 rxswift petstore
* update clojure petstore
* comment out clojure test in travis (already covered in circleci)
* run pestore server locally
* use wing328/swagger-samples to run petstore
* run petstore server in the background
* test ruby petstore client
* add /Users/travis/.cocoapods/repos/master to cache
* add back ruby test, use public pestore server
* add back bash client test
* add npm config set registry to avoid time out
* use docker branch in swagger samples
* remove bash test
* show go version, reorder
* debug go petstore client
* reinstall go
* comment out pod repo update
* uncomment pod repo update
* test go in circleci
* remove go from travis test
* brew install sbt
