Update readme.md

After following your bitkenix guide I still was nowhere near the maximum speed of my connection (with 48 multipart connections I was only getting a maximum of 10mb/sec). After increasing the minimum part size I was able to get the full 28mb/sec out of my connection :) 

Thanks again for the great guide.

-Jamie M.
Merge pull request #7 from toysareforboys/patch-1

Update readme.md