BUG: read_csv on windows loads "zero width no-break-space" unicode character
I'm working on a windows computer, with python pandas 0.16.2 installed. This is what happens when I tried loading in my csv file.

![bug](https://cloud.githubusercontent.com/assets/1865885/9190049/a3ec7cb8-3fa5-11e5-9922-70ccb55c30a9.png)

According to <a href="http://www.utf8-chartable.de/unicode-utf8-table.pl?start=65024&utf8=string-literal">this page</a>, the unicode character that pandas is loading in (`\xef\xbb\xbf`) is the "zero width no-break-space" character. The first entry of the csv doesn't need to be "mouse" for this bug to occur.

Can someone try to replicate this bug on another windows computer?
