Update visufunc.py
Removing hardcoded limit of 2000 pixels for projections.
Correctly populate .matplotlibrc for Travis

Matplotlib looks in ~/.config/matplotlib/matplotlibrc on Linux.

Fixes #200.
Merge pull request #201 from lpsinger/fix_travis

Correctly populate .matplotlibrc for Travis
Merge pull request #199 from samskillman/master

Removing hardcoded limit of 2000 pixels for projections.
Merge pull request #198 from zuoshifan/patch-2

Eliminate lines in colorbar for PDF figure output
Convert interval between parallels and meridians to int

An integer is expected by the string formatting
Fixes #204
Matplotlib 1.4 moved _process_plot_format

Added a try/except to work both in 1.3 and 1.4
Fixes #205
Fixed doctest in reorder

Using an integer map with UNSEEN values caused error on
recent numpy versions