Build ipa with xcrun

xcodebuild -sdk iphoneos7.0
zip -r build/darkdistrict.app.dSYM.zip build/darkdistrict.app.dSYM/
xcrun -sdk iphoneos PackageApplication -v build/darkdistrict.app -o ${IOS_PLAYER_FOLDER}/build/darkdistrict.ipa

http://blog.octo.com/en/automating-over-the-air-deployment-for-iphone/