fliplr documentation incorrectly states 2-d *not* required

[mikofski]

fliplr documentation incorrectly states 2-d not required, but that is not true. I think it is a typo, since fliplr was probably copied from flipud which really doesn't require a 2-d array.

>>> import numpy as np
>>> a = np.array([1,2,3,4])
>>> np.fliplr(a)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Python27\lib\site-packages\numpy\lib\twodim_base.py", line 61, in fliplr
    raise ValueError("Input must be >= 2-d.")
ValueError: Input must be >= 2-d.