implement processTemplates, remove ant dep

create home grown solution to filter and process files
based on Spring AntPathMatcher.  Change the name
of filterFiles to processTemplates.

relates to #44
change filterFiles to processTemplates
Use FilenameUtils to tidy processTemplates() method.

Since we want post-install scripts to have access to Commons IO we can use it
ourselves. In this case, we use `FilenameUtils` to perform path concatenation
and conversion of file separators to the platform-specific type.
Fix integration tests on Windows.

Fixes issue #56. The path to the lazybones executable was incorrect on Windows
because

1. it pointed to the shell script, not the batch file; and
2. it used forward slashes rather than backslashes.