Running the tests after npm install
Merge pull request #40 from hollandben/feature/postinstall-command

Running the tests after npm install
Caching the processed files to prevent re-caching
Added 'delete files' tests
Using the processed file map for the JSON output
Tidy up
Only deleting files if they are being renamed
Merge pull request #41 from hollandben/feature/21-processed-file-map

[WIP] Caching the processed files to prevent re-caching
Merge branch 'develop' of github.com:hollandben/grunt-cache-bust into develop