Add support for SparkFun Blynk Board

Author: ivankravets

boards/sparkfunBlynk.json

@@ -0,0 +1,25 @@
+{
+  "build": {
+    "core": "esp8266",
+    "extra_flags": "-DESP8266 -DARDUINO_ARCH_ESP8266 -DARDUINO_ESP8266_THING",
+    "f_cpu": "80000000L",
+    "f_flash": "40000000L",
+    "flash_mode": "qio",
+    "ldscript": "esp8266.flash.4m1m.ld",
+    "mcu": "esp8266",
+    "variant": "thing"
+  },
+  "frameworks": [
+    "arduino"
+  ],
+  "name": "SparkFun Blynk Board",
+  "upload": {
+    "maximum_ram_size": 81920,
+    "maximum_size": 1044464,
+    "require_upload_port": true,
+    "resetmethod": "nodemcu",
+    "speed": 115200
+  },
+  "url": "https://www.sparkfun.com/products/13794",
+  "vendor": "SparkFun"
+}