Update merchants.yml

combine pull request #120 and #121 with cryptostorm listing. Listings added alphabetically

_data/merchants.yml

@@ -2,6 +2,8 @@
   merchants:
     - name: "#monero-otc (OTC)"
       url: https://webchat.freenode.net?channels=%23monero-otc
+ +  - name: Bitsquare (decentralized)
+ +    url: https://bitsquare.io/
     - name: Bittrex
       url: https://www.bittrex.com/Market/Index?MarketName=BTC-XMR
     - name: Bter
@@ -52,12 +54,16 @@
   merchants:
     - name: CryptoEscrow Escrow Service
       url: http://www.cryptoescrow.eu
+ +    name: Cryptostorm VPN
+ +    url: https://cryptostorm.is/
     - name: Esperanto lessons from Kaja
       url: mailto:kiah.morante@gmail.com
     - name: MyMonero Web-based Wallet
       url: https://mymonero.com
     - name: Pradeep Atluri, Psychiatrist, New York
       url: http://dr.mindsci.com/
+ +  - name: Web Developer - Stefanos
+ +    url: http://www.stefanosioannou.com/web-development-monero-accepted
     - name: XMR.link OpenAlias Registry
       url: https://www.xmr.link/
     - name: XMR.to Monero to Bitcoin Payment Service