example/android: update LoopBack Android SDK

Replace SNAPSHOT version with 1.2.0 release.
Merge tag 'v1.0.0'

1.0.0
Update README.md

Replaced README info with links to docs.
Merge pull request #26 from strongloop/feature/update-android-sdk

example/android: update LoopBack Android SDK
example: Use more sensible default values

Use the hard-coded app id for LOOPBACK_APP_ID in the Android app.

Replace the default gcmServerApiKey with a descriptive text in the
server config.js
Replace old README with links to docs.
Add ref to original repo
Merge pull request #28 from strongloop/feature/improve-example-defaults

example: Use more sensible default values
Minor cleanup
Minor cleanup
Clean up main README and add links to docs
Minor rewording and better links to examples.
Create README.md
Fix link to docs after splitting article.
Fix link to docs after splitting article.
Fix the resetBadge
Refactor to support loopback mobile template
Fix the test case
Bump version
Export the default Push model