React Intercom Hook

Added language_override to list of settings that restart session.

Test added

v2.0.5

add test

Improve pre-initialization warnings

Log warnings if commands are issued before Intercom has been initialized (rather than blowing up).

Public release

Publish to both NPM and GPR registries

Trim the fat

Remove unused dependencies and build files

React Intercom Hook

Initialize and configure Intercom, expose Intercom Javascript API in React.