Requests and Progress Bar

In an attempt to monitor whether the program halted or not, I used Requests instead of Mechanize to download manage the connections. Using Requests, I added a small progress bar to help monitor if the download progress halted.

It is completely working in Windows 8, but I couldn't test it on W7 or Linux. Below is a small proof it's working.

![untitled](https://f.cloud.github.com/assets/2242083/948008/de30b66c-035e-11e3-8688-870ba778ca2a.png)