Build fails on iOS because of  RCTBridgeModule.h

I tried building the app and it failed on BridgeModule's import. I found a fix for this online, but I think this should be included in the module. 

Fix: 
replace 
```c
#import "RCTBridgeModule.h"
```
with 
```c
#if __has_include(<React/RCTBridgeModule.h>)
#import <React/RCTBridgeModule.h>
#else
#import "RCTBridgeModule.h"
#endif
```