Modification of v5.8 of bot originally available from http://clashbot.org/forums/index.php?/topic/1010-flawless-clashbot-release-58-recommended/
curl.exe is not included here to avoid risk of potential virus or malicious file.
You need a file called "curl.exe" that runs a program called cURL and put this file in ScriptDir\curl\
For your convenience, and referring to pushbullet's document: https://docs.pushbullet.com/
curl can be find in below location