CSVDataset

A wrapper for reading CSV files
UTF fix
Fixes & enhancements

Added class-level docstring and an option to set delimiter for the input
file. Fixed np.loadtxt and dictionary comprehension failing in Python
2.6.
a unit test for CSVDataset
formatting
import fix
test file path
import statements
Merge pull request #468 from zygmuntz/master

CSVDataset