Add Hive Android to wallet page

Greetings from Hive!

We had our Mac OS X wallet listed for a while now on the wallet page. This pull request renames the listing from just "Hive" to "Hive OSX", to clarify, that this refers to our Mac product.

In a second commit, it adds a listing for our Android wallet, which we launched a week ago and targets mobile users.

Hive Android is a fork of the Schildbach wallet, so it is based on a fairly mature codebase. You can find a review by Coindesk here http://www.coindesk.com/hive-launches-android-bitcoin-wallet-built-app-store/ and see user ratings in the Google Play store here https://play.google.com/store/apps/details?id=com.hivewallet.androidclient.wallet .

I hope, this pull request can be merged. Please let me know, if you have any questions or want me to change anything. Thanks!