React Native Bugfix

🐛 Bug Fix

• ReactNative support fixed. Make sure RavenJS used for raven-js instance and Raven used for React Component.

📝 Documentation

• Updated README.md for optional sentry config property.

Added optional sentry configs

🚀 New Feature

• You can now provide optional sentry config to the component. See more details about sentry configuration options here. (#1) @michalv8

React Native Support

Added simple React Native support