Update to Blynk.Cloud

Author: vshymanskyy

blynk.lua

@@ -24,7 +24,7 @@ local function split(str, delimiter)
 end
 
 local Blynk = {
-  heartbeat = 10,
+  heartbeat = 50,
   buffin = 1024,
   callbacks = {},
   state = STATE_DISCONNECT,

examples/client.lua

@@ -29,10 +29,10 @@ local function connectBlynk()
     sock:connect(host, 443)
     local opts = {
       mode = "client",
-      protocol = "tlsv1"
+      protocol = "tlsv1_2"
     }
     sock = assert(ssl.wrap(sock, opts))
-    sock:dohandshake()
+    assert(sock:dohandshake())
   else
     print("Connecting Blynk...")
     sock:connect(host, 80)