rdoc update
Typo
Update README.rdoc
Update README.rdoc

Typo: Fixed get_column_height into get_column_width. The first doesn't exist for worksheet and will return and error.
Merge pull request #149 from Alshurafa/patch-1

Update README.rdoc
Issue #150; also, starting to move convenience methods out into a separate module
Adding more tests
Version bump to 3.2.4
Updated rdoc
Regenerate gemspec for version 3.2.4
Issue #154: typo in the Theme definition
Version bump to 3.2.5
Updated rdoc
Merge branch 'master' into performance_enhancers