Corrected typos (whel -> wheel)
Merge pull request #54 from rdrake/patch-1

Corrected typos (whel -> wheel)
Fixed PlistBuddy Set bug.
Fixed permissions issue when modifying BundleIsRelocatable values.
Allow for arbitrary Makefile filename.
Merge pull request #55 from chymb/master

Use sudo and correct PlistBuddy syntax in relocation; specify custom makefile