new icon: crystal (original, original-wordmark) (#667)

Author: Panquesito7

devicon.json

@@ -812,6 +812,25 @@
         "color": "#00a818",
         "aliases": []
     },
+    {
+        "name": "crystal",
+        "tags": [
+            "programming",
+            "language"
+        ],
+        "versions": {
+            "svg": [
+                "original",
+                "original-wordmark"
+            ],
+            "font": [
+                "original",
+                "original-wordmark"
+            ]
+        },
+        "color": "#000000",
+        "aliases": []
+    },
     {
         "name": "d3js",
         "tags": [],