Add OpenGraph tags & SVGs (#113)

* Add OpenGraph tags

* Add logo and social card SVGs

Author: sitiom

index.html

@@ -12,6 +12,17 @@
     <meta charset="utf-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1" />
     <meta name="description" content="A command-line installer for Windows" />
+    <meta property="og:title" content="Scoop">
+    <meta property="og:description" content="A command-line installer for Windows">
+    <meta property="og:url" content="https://scoop.sh/">
+    <meta property="og:image" content="https://scoop.sh/social-card.png">
+    <meta property="og:image:width" content="1200">
+    <meta property="og:image:height" content="630">
+    <meta property="og:type" content="website">
+    <meta name="twitter:card" content="summary_large_image">
+    <meta property="twitter:image" content="https://scoop.sh/social-card.png">
+    <meta property="twitter:title" content="Scoop">
+    <meta name="twitter:site" content="@ScoopInstaller">
 
     <link rel="icon" href="/favicon.ico" />
     <link rel="manifest" href="/manifest.json" />