Added limit file size example to Readme

[nerycordova]

Hi there! I corrected a sentence and added an example on how to use file size limit.

[charmander]

I think a limit example should demonstrate more than attaching a listener to the event that’s already documented. How about covering the necessary error handling and cleanup?

[nerycordova]

Hi @charmander 👋 , thanks for your feedback. Sure, I'll be happy to do that. Clean up: are you referring to cleaning up the temp (truncated) file ? Also, could you give me some hints about the error handling you are referring to? Thanks!