test coverage

[perrygeo]

this has slipped down to 98%, let's shoot for 💯

The current list of missing lines:

---------- coverage: platform linux2, python 2.7.9-final-0 -----------
Name                          Stmts   Miss  Cover   Missing
-----------------------------------------------------------
src/rasterstats/__init__.py       5      0   100%
src/rasterstats/_version.py       1      0   100%
src/rasterstats/cli.py           54      2    96%   48, 53
src/rasterstats/io.py           171      3    98%   105, 275, 282
src/rasterstats/main.py         105      3    97%   130, 154, 240
src/rasterstats/point.py         66      2    97%   163, 193
src/rasterstats/utils.py         82      0   100%
-----------------------------------------------------------
TOTAL                           484     10    98%

[sgoodm]

With PR #144

---------- coverage: platform linux2, python 2.7.9-final-0 -----------
Name                          Stmts   Miss  Cover   Missing
-----------------------------------------------------------
src/rasterstats/__init__.py       5      0   100%
src/rasterstats/_version.py       1      0   100%
src/rasterstats/cli.py           54      1    98%   48
src/rasterstats/io.py           174      1    99%   108
src/rasterstats/main.py         113      1    99%   258
src/rasterstats/point.py         66      2    97%   163, 193
src/rasterstats/utils.py         82      0   100%
-----------------------------------------------------------
TOTAL                           495      5    99%

[perrygeo]

Closing for now, #144 pushed through most of the major coverage issues. Thanks @sgoodm