Fix CI issue for Podspec Lint

Author: freak4pc

.swift-version

@@ -140,7 +140,7 @@ extension Reactive where Base: URLSession {
                     let interval = Date().timeIntervalSince(d ?? Date())
                     print(convertURLRequestToCurlCommand(request))
                     #if os(Linux)
-                        print(convertResponseToString(response, error.flatMap { $0 as? NSError }, interval))
+                        print(convertResponseToString(response, error.flatMap { $0 as NSError }, interval))
                     #else
                         print(convertResponseToString(response, error.map { $0 as NSError }, interval))
                     #endif

RxCocoa/Foundation/URLSession+Rx.swift

@@ -16,7 +16,7 @@ function cleanup {
 trap cleanup EXIT
 
 if [[ ! -z "${TRAVIS}" ]]; then
-    gem install cocoapods --pre --no-rdoc --no-ri --no-document --quiet;
+    gem install cocoapods --pre --no-document --quiet;
     pod repo update;
 fi;