Update README.txt with the new location
Update README.txt with the new location

pawl/wtforms,hsum/wtforms,jmagnusson/wtforms,cklein/wtforms,subyraman/wtforms,skytreader/wtforms,Aaron1992/wtforms,crast/wtforms,Aaron1992/wtforms,pawl/wtforms,wtforms/wtforms,Xender/wtforms