Changed Twitter card

index.html

@@ -9,10 +9,10 @@
   <link rel="icon" href="web/favicon.png">
   <link rel="stylesheet" href="web/default.min.css">
   <link href="https://netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css" rel="stylesheet">
-  <meta name="twitter:card" content="summary">
+  <meta name="twitter:card" content="summary_large_image">
   <meta name="twitter:title" content="Comprehensive Python Cheatsheet">
   <meta name="twitter:description" content="Exhaustive, simple, beautiful and concise. A truly pythonic cheat sheet about Python programming language.">
-  <meta name="twitter:image" content="https://gto76.github.io/python-cheatsheet/web/image_twitter_card_2.jpeg">
+  <meta name="twitter:image" content="https://gto76.github.io/python-cheatsheet/web/image_social_3.png">
   <meta name="google-site-verification" content="w3rvuG0D1kUm_w20qsJecSEZh59Am8jK4eSPVU83e_M" />
   <meta name="viewport" id="viewport-meta">
 </head>

web/template.html

@@ -9,10 +9,10 @@
   <link rel="icon" href="web/favicon.png">
   <link rel="stylesheet" href="web/default.min.css">
   <link href="https://netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css" rel="stylesheet">
-  <meta name="twitter:card" content="summary">
+  <meta name="twitter:card" content="summary_large_image">
   <meta name="twitter:title" content="Comprehensive Python Cheatsheet">
   <meta name="twitter:description" content="Exhaustive, simple, beautiful and concise. A truly pythonic cheat sheet about Python programming language.">
-  <meta name="twitter:image" content="https://gto76.github.io/python-cheatsheet/web/image_twitter_card_2.jpeg">
+  <meta name="twitter:image" content="https://gto76.github.io/python-cheatsheet/web/image_social_3.png">
   <meta name="google-site-verification" content="w3rvuG0D1kUm_w20qsJecSEZh59Am8jK4eSPVU83e_M" />
   <meta name="viewport" id="viewport-meta">
 </head>