报错 ··· error: include of non-modular header inside framework module ··· [-Werror,-Wnon-modular-include-in-framework-module]
解决办法：
在pod lib lint 或者 pod spec lint 以及 pod repo push ....时候加上 --use-libraries
pod lib lint --use-libraries
pod spec lint --use-libraries
当然，在提交的时候也要加上
pod repo push --use-libraries
参考：http://stackoverflow.com/questions/29132496/cocoapod-spec-wont-lint-with-0-36
"XXX" did not pass validation, due to 29 warnings (but you can use `--allow-warnings` to ignore them).
pod lib lint --use-libraries --allow-warnings
pod trunk push XXX.podspec --use-libraries --allow-warnings
