Fixes pod lib lint.

Author: kzaher

.travis.yml

@@ -12,7 +12,7 @@ env:
   - BUILD="pod update                     && set -o pipefail && (xcodebuild -workspace RxDataSources.xcworkspace -scheme Tests -configuration Release -destination 'platform=iOS Simulator,name=iPhone 7' test && xcodebuild -workspace RxDataSources.xcworkspace -scheme ExampleUITests -configuration Release -destination 'platform=iOS Simulator,name=iPhone 7' test && xcodebuild -workspace RxDataSources.xcworkspace -scheme Example -configuration Release -destination 'platform=iOS Simulator,name=iPhone 7' build) | xcpretty"
   - BUILD="./dependencies.sh              && set -o pipefail && (xcodebuild -project   RxDataSources.xcodeproj   -scheme Tests -configuration Release -destination 'platform=iOS Simulator,name=iPhone 7' test && xcodebuild -project   RxDataSources.xcodeproj   -scheme ExampleUITests -configuration Release -destination 'platform=iOS Simulator,name=iPhone 7' test && xcodebuild -project   RxDataSources.xcodeproj   -scheme Example -configuration Release -destination 'platform=iOS Simulator,name=iPhone 7' build) | xcpretty"
   - BUILD="carthage update --platform ios && set -o pipefail && (xcodebuild -project   RxDataSources.xcodeproj   -scheme Tests -configuration Release -destination 'platform=iOS Simulator,name=iPhone 7' test && xcodebuild -project   RxDataSources.xcodeproj   -scheme ExampleUITests -configuration Release -destination 'platform=iOS Simulator,name=iPhone 7' test && xcodebuild -project   RxDataSources.xcodeproj   -scheme Example -configuration Release -destination 'platform=iOS Simulator,name=iPhone 7' build) | xcpretty"
-  - BUILD="pod lib lint RxDataSources.podspec --verbose && pod lib lint Differentiator.podspec --verbose "
+  - BUILD="pod repo update && pod lib lint RxDataSources.podspec --verbose && pod lib lint Differentiator.podspec --verbose "
   - BUILD="carthage update --platform iOS  && carthage build --no-skip-current --platform iOS"
   - BUILD="carthage update --platform tvOS && carthage build --no-skip-current --platform tvOS"