build: reverse dep order, google then jcenter

[mikehardy]

Fixes #386 where jcenter had a POM but 404d the artifact, breaking builds,
while google has the POM and artifact (as it's a google support library)

Also, jcenter is a superset of mavenCentral, so mavenCentral is
redundant:
https://jfrog.com/knowledge-base/why-should-i-use-jcenter-over-maven-central/

[mikehardy]

If you need access to this change prior to a release, you can ask npm or yarn to install from github instead of a release version, like so quoted from the issue:

If you want to check to see if the code in master will work, regardless, you can alter the react-native-share dependency in you package.json as a test to "git+https://github.com/react-native-community/react-native-share.git" and run an npm install - that's how you ask npm (or yarn) to pull github master of any dependency, as opposed to using release packages.

[padupuy]

@mikehardy thanks for the quick fix, could you release a new version soon ? Meanwhile the next release I will fork the project

[jgcmarins]

done:
https://github.com/react-native-community/react-native-share/releases/tag/v1.1.3
https://www.npmjs.com/package/react-native-share

[padupuy]

perfect, you rocks