Backport to support Android 2.x

[trietbui85]

I see in your Manifest, minSDK=11.
Could you please make SecretTextView compatible with Android 2.x?
(Is NineOldAndroid library helpful to backport animation of SecretTextView?)

[matthewrkula]

Yeah I can add that on the to do list.

[JakeWharton]

Not worth it. It's time to stop wasting time with pre-14!

[matthewrkula]

Thanks for the advice @JakeWharton. I appreciate all the work you do! Learning alot from your code!