cleaned indention in unzip
added :force attribute to Unzip class
implemented support for :force attribute in Unzip class to delete destination file before extracting
replaced :force attribute in Unzip class to be a single method
Merge pull request #40 from mhoyer/dev

Added support to override destination files on extraction for UnZip task
Merge pull request #43 from jamlen/dev

ensure file_name is set if flatten_zip is false when zipping additional ...
Fixed the title case, some spacing, and punctuation
Added configuration module for NuGetInstall task with tests