Changes include:
- Use methods from the ViewCompat otherwise those methods are not supported in
  < 14
- Use the compat version of Fragment and Preferences for the demo app

The ./gradlew build runs the lint check to verify the methods that aren't
supported in the API level < 14 are not called.
So it should be checked by the Circle CI.

Bump the version to 0.1.3

Retry the flaky instrumentation tests using the Cloud Test Lab

Fixes the horizontal padding values when parent's padding is set

Resotre the content_main.xml that accidentaly commited to wrap the FlexboxLayout by a ScrollView

FlexboxLayout by a ScrollView

Add the code style to follow to CONTRIBUTING.md

Format code based on AndroidStyle.

Change-Id: I6bdf29d1682cf15c26776f6ffcce87fd3b7f4ef6

Add a image to explain the Flexbox visually for Wiki.

Change-Id: Iada30e7caad5719a669567d029291b36f96acbf7

Add screenshots for the demo for WiKi

Change-Id: I33e54f1bd47ac0e1adf9335c040f9fd81b6506a1

Make the Cloud Test lab tests to be executed only if the PR is from the google org

Because from the forked PRs, environment variables set from the Circle CI UI
aren't visible. Thus service account key can't be exported.

Change-Id: I018b3300b23ead0007ea3e2574df303c7b0d5b5f

adding links to root dir

Enable InstrumentationTests on Circle CI
Fixes #11 

Change-Id: Iac2816198a2b9a694f2ca0a1ec302a0ebd5de4ba

getChildMeasureSpec use parent padding

Replace deprecated method; Fix wrong note link.

1. Replace deprecated method;
2. Fix wrong note link.

Bump version to 0.1.2

Add status badge for Circl CI and the latest bintray version

Change-Id: Ib026699ca64de15a7152be3d82218802f270fc84

Change-Id: I397a83d3fa2dc268705df8855b0c567fca3f2fc4

Fixes #18.

When there is a view whose visibility is View.GONE, the itemCount in a FlexLine
isn't correctly counted in the onMeasure method.
Thus in the onLayout method, an index mismatch was introduced.

Change-Id: I7e9c3ee8b847902c9db434e38dfc0a904951f611

add minor layout/wording fixes

README.md: Grammar and typo fixes

Signed-off-by: NEddie Ringle <eddie@ringle.io>