add MetaTrader csv format barfeed

barfeed for the stock exported from MetaTreder to CSV.
format:
Date,Time,Open,High,Low,Close,Volume
2011.12.08,18:49,77.708,77.710,77.702,77.702,30
2011.12.08,18:50,77.700,77.701,77.693,77.700,19
2011.12.08,18:51,77.701,77.702,77.700,77.700,15
2011.12.08,18:52,77.701,77.701,77.699,77.700,23