Adding username parameter

[alexowson]

No description provided.

[codecov]

Codecov Report

Merging #22 into master will decrease coverage by 0.76%.
The diff coverage is 75%.

@@            Coverage Diff            @@
##           master     #22      +/-   ##
=========================================
- Coverage   98.36%   97.6%   -0.77%     
=========================================
  Files           4       4              
  Lines         122     125       +3     
=========================================
+ Hits          120     122       +2     
- Misses          2       3       +1

Impacted Files	Coverage Δ
telegram_handler/handlers.py	98.64% <75%> (-1.36%)	⬇️

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[sashgorokhov]

Hey, thanks for the contribution! Could you also provide some documentation and usage example on new field? Thanks!

[alexowson]

Hi. When you use same chat_id to multiple accounts, that field helps you to know the source.

[alexowson]

Field must be named Source. Sorry, I am using it for instapy xD