Support for RN 0.47

Support for RN 0.47

Add backwards compatibility for older RN versions

Adds dynamic imports to support both new and older React Native versions (<0.40). Also adds default page to getProducts method.

Fix for RN0.40.0

Merge pull request #4 from shoutem/release/0.2.0

Release/0.2.0

First release

Merge pull request #2 from shoutem/release/0.1.0

Release/0.1.0