Added Assets of BandChain (#2297)

* Added Assets of BandChain

* Corrected BandChain Logo dimention

blockchains/band/info/info.json

@@ -0,0 +1,21 @@
+{
+    "name": "BandChain",
+    "website": "https://bandprotocol.com/",
+    "source_code": "https://github.com/bandprotocol/bandchain",
+    "white_paper": "https://github.com/bandprotocol/bandchain/wiki",
+    "short_description": "Band Protocol is a cross-chain data oracle platform that aggregates and connects real-world data and APIs to smart contracts.",
+    "description": "Band Protocol is a cross-chain data oracle platform that aggregates and connects real-world data and APIs to smart contracts.",
+    "socials": [
+        {
+            "name": "Twitter",
+            "url": "https://twitter.com/bandprotocol",
+            "handle": "bandprotocol"
+        },
+        {
+            "name": "Reddit",
+            "url": "https://www.reddit.com/r/bandprotocol/",
+            "handle": "bandprotocol"
+        }
+    ],
+    "explorer": "https://cosmoscan.io/"
+}