Add BitX wallet

[tstranex]

Hi!

We'd like to request the BitX wallet to be added to bitcoin.org. The BitX wallet is available on the web, Android and iOS. It is a cloud-based wallet (similar to Coinbase, Circle and Xapo). BitX has been available since 2013 and has raised $4M in venture capital.

Some notable features:

• Support for the BIP-70 payment protocol (both on web and Android)
• Buying and selling Bitcoin is available selected countries (currently South Africa, Kenya, Nigeria, Malaysia and Indonesia)
• Ability to send Bitcoin to email addresses and phone numbers
• Ability to recharge mobile airtime in selected countries (currently South Africa)
• Two-factor authentication using Google Authenticator (TOTP)
• Customer support in English, German, Dutch, Malay, Indonesian, Afrikaans

More information about BitX:

• General: https://bitx.co
• Company: https://bitx.co/about
• Security: https://bitx.co/security

BitX currently has a 4.4 star rating and 10,000-50,000 installs on Android.

• Android: https://play.google.com/store/apps/details?id=co.bitx.android.wallet
• iOS: https://itunes.apple.com/app/bitx-wallet/id927362479

Regards,
Timothy

[wbnns]

Closing this PR since Luno is already on the Bitcoin Exchanges page.