v0.4 I broke something and then I fixed it!

Apparently it's not cool to remove stuff from __init__.py, as IPython needs that to understand it's a magic.

v0.3 - Error Checking and Tests

Will not allow a user to enter a sheet name that's beyond excels limits (32 chars).

Tests added, 100% coverage.

v0.2 - Tests

Added in some tests, got things hooked up with Travis.

v0.1 Initial Release

Basic IPython magic functionality in place for %excelify dataframe