Added signs for bicycle/fishing/electronics shop

Unicode symbols:
U+1F3A3: fishing (fishing pole and fish)
U+1F6B2: bicycle
U+1F4FA: electronics (a television)

To find the html entity (🚲 for example) I've searched the web for the unicode string (U+1F6B2 for example).

shop.json

@@ -61,6 +61,12 @@
                 ],
                 "sign": "fa-birthday-cake"
             },
+            {
+                "types": [
+                    "bicycle"
+                ],
+                "sign": "🚲"
+            },
             {
                 "types": [
                     "boutique",
@@ -107,6 +113,18 @@
                 ],
                 "sign": "fa-building"
             },
+            {
+                "types": [
+                    "electronics"
+                ],
+                "sign": "📺"
+            },
+            {
+                "types": [
+                    "fishing"
+                ],
+                "sign": "🎣"
+            },
             {
                 "types": [
                     "hairdresser"