Add an universal header makes same code working

[aelam]

Without use_frameworks!
we can import it by #import <WebViewJavascriptBridge/WebViewJavascriptBridge.h>

but if you turn on use_frameworks !
the origin import will be broken. #import <WebViewJavascriptBridge/WebViewJavascriptBridge.h>
But if adding a header with same name with framework, and put all headers in it
Both #import <WebViewJavascriptBridge/WebViewJavascriptBridge.h> and @import WebViewJavascriptBridge; can work

my case is no matter my pod is imported as dynamic framework or static library (by Cocoapods), I don't want the import staff break my code

[marcuswestin]

Sounds good! Can you create a PR?

[marcuswestin]

Fixed in f3d2ace