Remove excess whitespace
Merge pull request #206 from sodabrew/whitespace_p4

Remove excess whitespace
Handle both Array/Enumerable and String values for excludes parameter

Thanks to @revhazroot for identifying the problem that excludes with a
string or single-element array fails on Ruby >= 1.9.
Merge pull request #207 from sodabrew/excludes_string

Handle both Array/Enumerable and String values for excludes parameter