Code refactored

The code has been refactored a lot, so now it's all self contained in an object (before it was made by multiple classes and global variables, it was really a mess). The logic is now clearer and a more meaningful approach has been used in the code.

Slightly better version

Updated readme, updated the main script

Now the readme is more detailed about commands and how the images are fetched.
The scripts now handles errors while sending images without crashing the whole system, replies in a more unique way to private messages and the log is appended at the end of the file (previously, it erased everything when it started up - access mode to file is now "a" while it used to be "w+")

First released version

v1.0

Typos in readme.md