2.1.6 - Upgrade to support RN >=0.69.7

Only version upgrade changes.

• Upgrade android to support RN >=0.69.7
• Upgrade ios target to 9
• Move podspec outside ios folder to support newer RN

2.1.5 - First release since fork from react-native-open-doc

Exported functions

Opening a document for view:

• open(pathToFile) - by file path (local path, with or without file://) [android & iOS]
• NEW openWithSuggestedMime(contentUri, suggestedMimeType) - for content:// URI document with specified mime type [android ONLY]

Sharing a document in android (for iOS use Share.share({ url: selectedUri }) api):

• share(pathToFile) - by file path (local path, with or without file://) [android ONLY]
• NEW shareWithSuggestedMime(contentUri, suggestedMimeType) - for content:// URI document with specified mime type [android ONLY]

Open file picker (android and iOS)

• pick(null, (error, files) => {}) - use file picker [android & iOS]