Move useless scripts to samples folder

samples/btc-widget.lua

@@ -0,0 +1,16 @@
+-- name = "Bitcoin price"
+-- description = "Current Bitcoin price (blockchain.info)"
+-- type = "widget"
+-- author = "Evgeny Zobnin (zobnin@gmail.com)"
+-- version = "1.0"
+
+equals = "<font color=\""..ui:get_colors().secondary_text.."\"> = </font>"
+
+function on_alarm()
+    http:get("https://api.blockchain.info/ticker")
+end
+
+function on_network_result(result)
+    local price = ajson:get_value(result, "object object:USD string:last")
+    ui:show_text("1 BTC"..equals..price.." USD")
+end