FlipTabs v1.5

Add RTL support.

FlipTabs v1.4

Fix setEnabled issue.
Add ColorStateList support for setTextColor & setHighlightColor.
Add setDisabledColor function.

FlipTabs v1.3

Add attribute & function to set border width.
Add functions to get TextViews for customization.
Minor tab UI improvements.
Fixed multiline issue mismatched height issue.

Resolves #3

FlipTabs v1.2

Add attribute removeDefaultPadding that can be used to remove the default padding.

FlipTabs v1.1

Fixes issue where selected tabs background color was not changed when using setOverallColor or setHighlightColor

FlipTabs v1.0

Merge branch 'master' of https://github.com/Chrisvin/FlipTabsDemo