Adding Scope in the custom variables

1.0.70

adding scope in custom params via a method putCustomFieldWithScope

Fix: Android dependency upgrade for

Merge pull request #6 from verloop/url_click_listener

upgraded the code

Added Url click listeners

• Url click listeners
• Hide chat method

Added button listeners

• Added onClick listeners on button type for android as well as iOS
• updated iOS framework

iOS code wrapper and Android upgrade

• Updated the deprecated support libraries in Android
• Fixed the import issues for iOS which was hampering the react-native wrapper building

Adnroid fix for all major version of react native

1.0.62-rc12

Fixing android issue with newer version of react native