Summary:
### iOSSample:
Fix iOS Sample App crash: UI need to be updated on Main Thread
### SampleSwift:
* Upgrade swift version
* Fix force unwrapping
* UI need to be updated on Main Thread
## Changelog
Pull Request resolved: https://github.com/facebook/flipper/pull/740
Differential Revision: D19397414
Pulled By: passy
fbshipit-source-id: 7af84c0fe43861aff6a18c36bf81a940baec5147
Summary:
Solves #173
- [x] Add plugins in the sonarkit xcodeproj so that its easy to debug
- [x] Get rid off the c++ in the headers
- [x] Add example to hit network requests and validate
Have a look at the screen shot below ✨⭐️⚡️
<img width="1677" alt="screen shot 2018-08-02 at 12 46 07 pm" src="https://user-images.githubusercontent.com/3865908/43581809-22efe4fe-9652-11e8-9424-f279d07c5c81.png">
Pull Request resolved: https://github.com/facebook/flipper/pull/201
Reviewed By: danielbuechele
Differential Revision: D9132157
Pulled By: priteshrnandgaonkar
fbshipit-source-id: 2b425506961f02eb2bf629c2bcab0da6e7ce5bb0