Add open graph meta tags

Author: Janaka-Steph

ui/src/img/bitcoin-studio-bridge.jpg

@@ -1 +1,8 @@
-    {{!-- Add additional meta tags here --}}
+<meta name="twitter:card" content="summary"/>
+<meta name="twitter:creator" content="@janakaSteph"/>
+<meta property="og:url" content="https://bitcoinjs-guide.bitcoin-studio.com"/>
+<meta property="og:title" content="Bitcoin Programming with BitcoinJS, Bitcoin Core and LND"/>
+<meta property="og:description"
+      content="Learn Bitcoin programming, how to construct all kind of transactions and much more!"/>
+<meta property="og:image"
+      content="https://bitcoinjs-guide.bitcoin-studio.com/_/img/bitcoin-studio-bridge.jpg"/>